Wedge_Bits[ BLOCK_SIZES ] = {
  0, 0, 0, 4, 4, 4, 4, 4, 4, 4, 4, 4,
  4, 0, 0, 0, 0, 0, 0,
  0, 0, 4, 4, 4, 4,
  0, 0, 4, 4, 0, 0
 }