- against c2

  c1      9 - 17
  c3     10 - 16
  c8      9 - 17
  c12    14 - 12
  c16    16 - 10
  c24    15 - 11
  c32    16 - 10
  c40    16 - 10
  c48    18 - 10
  c56    16 - 10
  c64    17 - 9
  c72    17 - 9
  c80    16 - 10
  c96    17 - 9
  c112   14 - 12
  c128   14 - 12
  c256   14 - 12
  c1000  14 - 12
  c2048  15 - 11
  c4096  13 - 13

c48-c1000  16 - 10
c64-c1000  15 - 11
c64-c48    13 - 13
