XINTRA8

An XIntra8 frame (also known as a J-type frame or J-frame) is a type of frame similar to an I-frame. They are used in Microsoft's MPEG-4 variation codec WMV2/WMV8 and the same coding method (with a different header) is used in WMV3 Complex Profile under the name "X8". XIntra8 frames are a type of intra frame (spatial prediction). This is why they are said to be similar to I-frames, because both B-frames and P-frames use inter-frame prediction (temporal prediction). XIntra8 frames operate on 8x8 pixel blocks. XIntra8 frame types are missing in WMV9. XIntra8 frames reportedly operate in 10 different modes (need more info on this).

MPlayer on x86 can play files containing these frames using a binary codec. ffmpeg can also play files containing Xintra8 frames, but, those frames will be skipped. Xintra8 have not been reverse engineered, so there is no documentation available. If a stream contains Xintra8 frames the Xintra8 bit will be set in the stream's extradata.

Note: J-frame is the notation used by FFmpeg developers. XMV SDK calls it XIntra8 frame and in WMV3 it's called Intra_X8.

The main differences between XIntra8-frames and I-frames:

1. They are not derived from MPEG-4 standard.
2. Picture is coded as blocks, not as macroblocks.
3. Each frame may use its own Huffman codes.

Reference [1] (in german).

Arrays with the huffman code lengths that wmv2 J-Frames use (not sure all are really used) in a sanitized form (decoder stores 2 per byte and with -1 offset). There are codes for values 0..11, 0..76 and 0..33.

huffman header:
index for code table: depends on number of code tables for mode (1, 2 or 3 bits)

gacCodeLengthsOrientLowRate[][] = {
    {2, 2, 3, 3, 3, 6, 5, 6, 6, 6, 6, 6},
    {1, 2, 3, 5, 5, 7, 6, 7, 7, 7, 7, 7}
};

gacCodeLengthsOrientHighRate[][] = {
    {1, 3, 3, 4, 4, 6, 5, 6, 6, 6, 6, 6},
    {5, 5, 5, 2, 2, 4, 5, 3, 4, 4, 5, 5},
    {2, 2, 3, 3, 3, 6, 6, 5, 6, 6, 6, 6},
    {3, 4, 4, 2, 2, 5, 5, 4, 5, 5, 5, 5}
};

gacCodeLengthsInterLowRate[][] = {
    {
      3,  4,  6,  6,  7,  6, 15,  8, 15,  9, 15,  9, 15, 15, 15, 14,
      5,  6,  9,  9,  7,  7,  9,  2,  3,  4,  4,  5,  6,  8,  7,  6,
      7,  8, 14,  7,  7,  7,  9,  5,  6,  9,  8,  9,  9, 14, 14, 14,
      8, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14,  9, 14, 14, 14, 14,
     14, 14,  9, 14,  9, 14, 14, 14, 14,  9, 14, 14, 14
    },{
      3,  4,  4,  5,  6,  6,  6,  6,  7,  8,  8,  8,  8, 14, 10, 10,
      4,  5,  6,  7,  5,  6,  5,  4,  5,  5,  6,  6,  6,  6,  6,  7,
      8,  8,  7,  7,  7,  7,  8,  7,  7,  8,  8,  8, 14, 10,  9, 14,
      5,  9, 14, 14,  5,  8, 14, 14, 14,  6,  8,  7,  8,  9,  8, 14,
     14,  8,  9, 14, 14, 14, 14,  9, 14,  5,  8,  9, 14
    },{
      4,  5, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11,
     11, 11, 11, 11, 11, 11, 11,  1,  2,  5,  5,  5, 11, 11, 11, 11,
     11, 11, 11, 11, 11, 11, 11,  5, 11, 11, 11, 11, 11, 11, 11, 11,
     11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11,
     11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11
    },{
      8,  8,  8,  8,  8,  8,  8,  8,  8,  8,  8,  8,  8,  8,  8,  8,
      8,  8,  8,  8,  8,  8,  8,  1,  8,  7,  7,  7,  7,  7,  7,  7,
      7,  7,  7,  7,  7,  7,  7,  7,  7,  7,  7,  7,  7,  7,  7,  7,
      7,  7,  7,  7,  7,  7,  7,  7,  7,  7,  7,  7,  7,  7,  7,  7,
      7,  7,  7,  7,  7,  7,  7,  7,  7,  7,  7,  7,  7
    },{
      9,  9,  9,  9,  9,  9,  9,  9,  9,  9,  9,  9,  9,  9,  9,  9,
      9,  9,  9,  9,  9,  9,  8,  2,  1,  8,  8,  8,  8,  8,  8,  8,
      8,  8,  8,  8,  8,  8,  8,  8,  8,  8,  8,  8,  8,  8,  8,  8,
      8,  8,  8,  8,  8,  8,  8,  8,  8,  8,  8,  8,  8,  8,  8,  8,
      8,  8,  8,  8,  8,  8,  8,  8,  8,  8,  8,  8,  8
    },{
     10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10,
     10, 10, 10, 10,  9,  9,  9,  1,  3,  9,  9,  2,  9,  9,  9,  9,
      9,  9,  9,  9,  9,  9,  9,  9,  9,  9,  9,  9,  9,  9,  9,  9,
      9,  9,  9,  9,  9,  9,  9,  9,  9,  9,  9,  9,  9,  9,  9,  9,
      9,  9,  9,  9,  9,  9,  9,  9,  9,  9,  9,  9,  9
    },{
      2,  4,  5,  5,  6,  6,  7,  8,  8,  8,  9,  9, 10,  9, 10, 15,
      3,  5,  6,  6,  4,  7,  5,  5,  7,  7,  7,  8,  7,  7,  8,  8,
      8,  8,  8,  8,  8,  9,  8,  8,  8,  9, 15, 10, 10, 10, 15, 10,
      6,  9, 15, 15,  4,  6, 10, 15, 14,  6,  8, 14, 10, 14, 14, 14,
     14,  8, 10, 10, 14, 14, 14, 14, 14,  5, 10, 14, 14
    },{
      3,  4,  5,  5,  6,  8,  7,  6,  7, 13,  8,  8, 13, 13, 13,  8,
      4,  5,  7,  6,  6,  7,  6,  3,  5,  5,  4,  6,  6,  6,  5,  8,
      6,  6,  6,  6,  8,  8,  7,  5,  7,  7, 13,  7,  8, 13, 13, 13,
      7,  7, 13, 13,  8, 13, 13, 13, 13,  8, 13,  7,  8, 13, 13, 13,
     13,  8, 13, 13, 13, 13, 13,  8, 12,  6, 12, 12, 12
    }
};

gacCodeLengthsInterHighRate[][] = {
    {
      2,  3,  4,  5,  6,  7,  7,  7,  9,  8,  8,  8, 10, 10, 10, 10,
      4,  7,  9, 10,  6,  7,  7,  4,  4,  5,  5,  5,  6,  6,  6,  6,
      7,  7,  7,  7,  7,  7,  7,  8,  9, 10, 14, 14, 14, 14, 10, 14,
      9, 14, 14, 14,  8, 14, 14, 14, 14, 10, 14,  7,  8,  8,  9, 14,
     14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13
    },{
      3,  5,  7,  6,  6,  8,  8,  8, 14, 14,  7, 14, 14, 14, 14, 14,
      6,  8, 14,  8, 14, 14, 14,  2,  3,  5,  4,  4,  4,  6,  7,  7,
      7,  7,  8,  7,  6,  6,  6,  6,  8, 14,  8,  8,  8, 14, 14, 14,
      8, 14, 14, 14, 13, 13, 13, 13, 13, 13, 13,  6, 13, 13, 13, 13,
     13,  7, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13
    },{
      2,  3,  3,  4,  5,  5,  6,  6,  7,  7,  7,  8,  8,  8,  9, 10,
      4,  6,  8,  9,  6,  9,  8,  5,  6,  6,  6,  7,  7,  7,  7,  7,
      7,  7,  7,  7,  7,  7,  8, 16, 16, 15, 12, 15, 15, 15,  8, 10,
      9, 12, 15, 15,  8, 15, 15, 15, 15,  9, 15,  7,  8,  8, 11, 12,
     15, 15, 15, 15, 15, 15, 15, 15, 15,  9, 15, 15, 15
    },{
      2,  3,  4,  5,  5,  6,  6,  7,  7,  8,  8,  9,  9,  9, 10, 10,
      3,  5,  7,  7,  4,  7,  5,  6,  7,  7,  7,  8,  8,  8,  8,  8,
      8,  9,  8,  8,  8,  9, 11, 10, 11, 15, 10, 15, 15, 15,  9, 11,
      7, 12, 15, 15,  5,  7,  8, 10, 11,  7, 10,  8,  8, 10, 10, 12,
     15, 11, 15, 15, 15, 15, 15, 15, 15,  7, 14, 12, 12
    },{
      3,  4,  4,  5,  6,  6,  6,  7,  6,  7,  8,  8,  8,  9,  9,  8,
      4,  5,  6,  6,  4,  6,  5,  5,  6,  6,  6,  6,  6,  6,  6,  7,
      7,  7,  7,  7,  7,  8, 11,  7,  7,  8,  9,  9,  9, 10,  9, 10,
      6,  8, 15, 15,  4,  7,  9, 15, 15,  6, 10,  7,  8,  8, 10,  9,
     15,  9, 10, 10, 10, 15, 14, 14, 14,  5,  9, 14, 14
    },{
      2,  4,  5,  5,  6,  6,  7,  8,  8,  8,  9, 11,  8, 10, 11, 15,
      3,  5,  6,  7,  4,  6,  5,  6,  7,  8,  7,  8,  7,  8,  7,  8,
      8,  9,  9,  9,  9,  9, 11,  9, 10, 11, 15, 10, 11, 11, 10, 11,
      6,  8, 15, 15,  4,  5,  7,  7,  9,  6,  8,  8, 10, 11, 15, 10,
     15, 10, 10, 15, 15, 14, 14, 14, 14,  5, 10, 11,  9
    },{
      2,  4,  5,  6,  6,  8,  9, 10, 10,  9, 15, 15, 10, 15, 10, 15,
      4,  5,  8,  8,  5,  9,  8,  3,  3,  4,  5,  6,  6,  7,  7,  7,
      8,  8,  9,  8, 10, 15,  9,  6,  6,  9, 10,  8,  8, 10, 15, 15,
      9, 15, 15, 15,  8, 15, 15, 15, 15,  9, 15,  9, 15, 15, 15, 15,
     15, 10, 10, 15, 15, 15, 15, 15, 15,  8, 14, 14, 14
    },{
      4, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11,
     11, 10, 10, 10, 10, 10, 10,  1,  2, 10,  4,  4, 10, 10, 10, 10,
     10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10,
     10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10,
     10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10
   }
};

gacCodeLengthsIntraLowRate[][] = {
      3,  4,  5,  5,  5,  5,  6,  7,  6,  7,  8,  7,  7,  8,  8,  9,
      4,  6,  6,  7,  5,  8,  6,  4,  4,  5,  6,  6,  6,  6,  7,  7,
      7,  7,  7,  7,  7,  7,  7,  7,  7,  9,  9,  9, 11,  9,  6,  8,
      5,  7,  9,  9,  7, 10, 14, 14, 14,  7, 10,  7,  8,  9,  8,  7,
     14,  7,  7, 10, 10, 14, 14, 10, 14,  6,  9,  8, 14
    },{
      2,  4,  5,  5,  6,  7,  7,  7,  8,  9,  9,  9,  9, 15, 10, 11,
      3,  5,  6,  7,  4,  5,  4,  6,  7,  7,  8,  8,  7,  8,  9,  8,
      9,  9,  9,  9, 10, 11, 11,  9,  9, 11, 15, 10, 15, 15, 15, 15,
      6,  8, 15, 15,  4,  7,  8, 11, 15,  5,  8, 11, 10, 15, 15, 15,
     15,  9, 15, 14, 14, 14, 14, 14, 14,  5, 14, 14, 14
    },{
      3,  4,  4,  5,  6,  7,  6,  7,  9,  9,  8, 15,  9, 15, 15, 15,
      3,  5,  7,  7,  4,  6,  5,  4,  4,  5,  6,  6,  6,  6,  7,  8,
      7,  8, 10,  8,  9, 10, 10,  6,  7,  9,  9,  8, 10,  9, 15, 15,
      7,  9, 15, 15,  5,  8, 14, 14, 14,  6,  9,  9, 10, 10, 14, 14,
     14,  8, 14, 14, 10, 14, 14,  9, 14,  6,  8,  9, 14
    },{
      3,  4,  5,  5,  6,  6,  7,  7,  6,  6,  7,  7,  9,  9,  7,  8,
      5,  6,  9,  7,  6,  7,  7,  3,  3,  5,  5,  6,  6,  6,  7,  7,
      8,  8,  8,  8,  7,  6,  7,  7,  6,  8,  9, 14, 14, 14,  7,  9,
      7,  8, 14, 14,  8, 14, 13, 13, 13,  8, 13,  6,  7,  9,  6,  7,
     13,  7,  7, 13, 13, 13, 13, 13, 13,  8, 13,  9, 13
    },{
      2,  4,  5,  5,  6,  6,  7,  7,  7,  8,  9,  9, 10, 10, 10, 15,
      3,  5,  6,  7,  4,  6,  6,  4,  5,  6,  6,  6,  7,  7,  7,  7,
      8,  8,  8,  8,  8,  8, 10,  7,  8,  9,  9, 10, 10, 12, 10, 12,
      6,  8, 15, 15,  6,  9, 15, 15, 15,  7, 12, 10, 10, 15, 12, 11,
     15,  8,  9, 15, 12, 15, 15, 15, 14,  6, 12, 11, 14
    },{
      3,  4,  4,  5,  5,  6,  7,  8, 11,  9, 11, 10, 11, 15, 15, 15,
      4,  5,  6,  7,  5,  7,  6,  3,  4,  5,  5,  5,  5,  6,  6,  7,
      8,  8,  8,  7,  8,  9, 11,  5,  7,  8,  8,  7, 10,  9,  9, 15,
      7, 15, 15, 15,  7, 11, 15, 14, 14,  7, 14,  9, 10, 10,  9, 14,
     14,  8, 11, 14, 14, 14, 14,  9, 14,  7,  9, 14, 14
    },{
      3,  4,  4,  5,  5,  5,  5,  6,  7,  5,  7, 13,  7, 13,  7, 13,
      4,  6,  7,  7,  5,  7,  5,  6,  6,  7,  6,  7,  7, 13,  7,  7,
     13, 13, 12,  7,  7, 12, 12,  7, 12, 12, 12, 12, 12, 12,  5,  6,
      4,  5, 12,  7,  5, 12, 12, 12, 12,  6, 12,  6, 12, 12, 12, 12,
     12,  6, 12, 12, 12, 12, 12, 12, 12,  5, 12,  7, 12
    },{
      3,  4,  5,  6,  6,  8,  8,  8, 11, 15, 15, 15, 15, 15, 15, 15,
      4,  6,  7,  9,  5,  8,  8,  2,  3,  5,  5,  5,  6,  6,  8,  8,
      9,  8,  7,  8,  9, 11, 15,  5,  7,  8,  9,  8,  9,  9, 15, 15,
      8, 10, 15, 15,  8, 15, 15, 15, 15,  9, 15,  8,  9, 15, 15, 15,
     15,  9, 15, 15, 15, 15, 15, 10, 14,  7,  9, 14, 14
    }
};

gacCodeLengthsIntraHighRate[][] = {
    {
      3,  4,  4,  5,  6,  7,  6,  8,  8,  9, 10,  9,  9,  9, 15, 11,
      4,  5,  6,  7,  5,  7,  5,  3,  4,  5,  5,  5,  5,  6,  6,  7,
      8,  8,  8,  8,  8,  9, 10,  6,  7,  8,  8,  8, 11, 10, 11, 15,
      7, 14, 14, 14,  6, 10, 14, 14, 14,  7, 14,  8,  9, 11, 10, 11,
     14,  8, 10, 14, 14, 14, 14, 14, 14,  6,  9, 11, 14
    },{
      2,  3,  4,  5,  6,  6,  7,  8,  8,  8,  9,  9, 11, 11, 11, 11,
      3,  5,  6,  7,  4,  6,  4,  8,  9, 10,  9, 10, 10, 12, 10, 10,
     10, 10, 11, 12, 10, 12, 12, 15, 15, 15, 15, 14, 14, 14, 11, 11,
      8, 10, 12, 14,  4,  6,  7,  8, 10,  6,  8, 11, 10, 14, 11, 12,
     14, 14, 14, 14, 14, 14, 14, 14, 14,  6, 11, 11, 10
    },{
      3,  4,  5,  6,  7,  8,  8,  8, 10,  9, 10, 10, 16, 10, 10, 16,
      3,  5,  6,  8,  3,  5,  4,  7,  9,  9,  9,  9,  9, 10, 10, 10,
     10, 10, 10,  9, 10, 11, 16, 10, 11, 10, 11, 10, 16, 11, 15, 15,
      7,  9, 15, 15,  3,  4,  6,  6,  8,  5,  7, 15, 15, 15, 15, 11,
     15, 11, 11, 11, 15, 15, 15, 15, 15,  5, 11,  8,  8
    },{
      2,  3,  4,  4,  5,  5,  6,  6,  6,  6,  7,  7,  8,  8,  8,  9,
      4,  6,  7,  9,  6,  8,  7,  6,  6,  6,  6,  6,  7,  7,  7,  7,
      7,  7,  7,  7,  8,  8,  9, 11, 10, 15, 15, 15, 15, 15,  7,  8,
      8, 12,  9, 15,  7,  9, 15, 15, 15,  8, 11,  6,  7,  8,  8,  7,
      9, 11, 11, 15, 15, 15, 14, 14, 14,  8, 14, 14, 14
    },{
      2,  4,  5,  6,  6,  7,  7,  8,  8,  8,  9,  9, 10, 10, 14, 12,
      3,  5,  6,  7,  4,  6,  5,  5,  6,  6,  6,  7,  7,  8,  7,  8,
      8,  8,  8,  8,  9, 10, 10,  7,  8,  9,  9, 10, 11,  9,  9, 10,
      7,  8, 12, 12,  4,  6,  8,  8,  9,  6,  8,  9, 10, 10, 11, 10,
     11,  9,  9, 11, 11, 14, 14, 11, 14,  6,  9,  9, 10
    },{
      2,  3,  4,  5,  5,  6,  6,  7,  7,  7,  8,  8,  8,  9, 10,  9,
      3,  5,  7,  8,  5,  7,  6,  5,  6,  7,  7,  7,  8,  8,  7,  8,
      8,  8,  8,  8,  8,  9,  9, 11, 12, 12, 15, 13, 15, 15,  8,  9,
      8, 10,  9, 13,  5,  7,  9,  9, 15,  7, 11,  8,  8,  8,  9,  8,
     11, 12, 13, 15, 15, 15, 15, 15, 15,  7, 14, 11, 11
    },{
      3,  4,  4,  5,  5,  6,  6,  7,  8,  8,  8,  9,  9,  9, 11, 12,
      3,  5,  6,  7,  4,  6,  5,  4,  5,  6,  6,  7,  7,  7,  7,  7,
      7,  8,  8,  8,  9,  8, 10,  7,  8,  9, 11,  9, 10, 12,  9, 15,
      6,  7, 15, 15,  5,  7,  9, 11, 15,  6,  9,  8,  9, 10, 10, 11,
     15,  8,  9, 15, 15, 15, 14, 14, 14,  5, 10,  9, 14
    },{
      2,  4,  5,  6,  7,  7,  8,  8,  9,  9,  9, 10, 15, 15, 15, 15,
      3,  5,  6,  7,  4,  6,  4,  8,  8,  9, 10,  9, 10,  9, 10, 10,
     15, 10, 11, 11, 15, 10, 15,  9, 11, 15, 15, 11, 11, 15, 11, 15,
      7, 10, 15, 15,  3,  5,  7,  7,  9,  5,  7,  9, 11, 15, 14, 14,
     14,  9,  9, 14, 14, 14, 14, 14, 14,  5, 11,  8, 10
    }
};

gacCodeLengthsDCLowRate[][] = {
    { 5,  4,  4,  5,  5,  4,  5,  5,  7,  7, 12, 12, 12, 12, 12, 12, 12,
      3,  2,  3,  4,  5,  5,  7,  8, 12, 12, 12, 12, 12, 12, 12, 12, 12 },
    { 3,  3,  3,  4,  4,  3,  4,  4,  6,  7,  7, 11, 11, 11, 11, 11, 11,
      6,  4,  5,  5,  6,  5,  7,  7, 11,  7, 11, 11, 11, 11, 11, 10, 10 },
    { 7,  7,  6,  7,  6,  7,  8,  8, 13, 13, 13, 13, 13, 13, 13, 13, 12,
      1,  2,  3,  5,  6,  8, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12 },
    { 4,  3,  3,  4,  4,  3,  3,  3,  5,  5,  7, 11, 11, 11, 11, 11, 11,
      5,  7,  6,  6,  7,  7,  7,  7, 11, 11, 11,  7, 11, 11, 11, 10, 10 },
    { 8,  7,  7,  7,  9,  8,  9, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13,
      2,  1,  3,  4,  6,  7,  9, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13 },
    { 7,  7,  6,  6,  6,  6,  6,  6,  6,  6,  6,  6,  6,  6,  6,  6,  6,
      6,  6,  6,  6,  6,  6,  6,  6,  6,  6,  1,  6,  6,  6,  6,  6,  6 },
    { 5,  4,  5,  5,  6,  5,  6,  6,  8,  8, 13, 13, 13, 13, 13, 13, 13,
      2,  2,  3,  4,  5,  5,  8,  9, 13, 13, 13, 13, 13, 13, 13, 13, 13 },
    { 7,  7,  7,  7,  7,  7,  7,  7,  7,  7,  7,  7,  7,  7,  7,  7,  7,
      1,  2,  7,  7,  7,  7,  7,  7,  7,  7,  7,  7,  7,  7,  7,  7,  7 }
};

gacCodeLengthsDCHighRate[][] = {
    { 5,  4,  5,  5,  5,  5,  6,  6,  8,  8, 13, 13, 13, 13, 13, 13, 13,
      2,  2,  3,  4,  5,  6,  8,  9, 13, 13, 13, 13, 13, 13, 13, 13, 13 },
    { 4,  3,  3,  4,  4,  3,  4,  3,  4,  4,  5,  6,  9,  9, 13, 13, 13,
      6,  6,  6,  7,  9,  7,  8,  9, 13, 13, 13, 12, 12,  9, 12, 12, 12 },
    { 4,  3,  3,  4,  4,  4,  4,  4,  6,  6,  7,  7, 12, 12, 12, 12, 12,
      4,  3,  4,  5,  6,  6,  7,  8, 12, 12, 12, 12, 12, 12, 12, 11, 11 },
    { 4,  2,  3,  3,  3,  3,  4,  4,  6,  6,  7,  8, 14, 14, 14, 14, 13,
      9,  7,  8,  8, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13 },
    { 7,  7,  7,  7,  7,  7,  7,  7,  7,  7,  7,  7,  7,  7,  7,  7,  7,
      1,  2,  7,  7,  7,  7,  7,  7,  7,  7,  7,  7,  7,  7,  7,  7,  7 },
    { 5,  4,  5,  6,  6,  6,  7,  6,  7,  6,  8,  7,  8, 13, 13, 13, 13,
      3,  1,  3,  7,  8,  9, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12 },
    { 4,  2,  3,  3,  4,  4,  5,  6,  7,  7,  8, 14, 14, 10,  9, 14, 14,
      4,  3,  5,  6,  8,  8, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13 },
    { 6,  6,  6,  7,  7,  6,  6,  6,  7,  8,  8,  9, 10, 14, 14, 14, 14,
      1,  2,  4,  5,  6,  7,  8, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13 }
};