Default_Do_Square_Split_Cdf
    [PARTITION_STRUCTURE_NUM][SQUARE_SPLIT_CONTEXTS][2 + 1] = {
  {
    {18000,   7, 0},
    {10521,  37, 0},
    {11395,  62, 0},
    { 4419,  32, 0},
    {12996,  85, 0},
    { 8185,  55, 0},
    {10979,  36, 0},
    { 5010,  32, 0}
  },
  {
    {16384,   0, 0},
    {16384,   0, 0},
    {16384,   0, 0},
    {16384,   0, 0},
    {16384,   0, 0},
    {16384,   0, 0},
    {16384,   0, 0},
    {16384,   0, 0}
  }
}