C(26,11,2) = 8

Method of Construction: mills, ars combinatoria, 8 (1979) pg. 231

Lower Bound: Schonheim

  1  2  3  4  5  6  7  8  9 10 25
  1  2  3  4 11 12 13 14 15 16 26
  1  2  3 17 18 19 20 21 22 23 24
  4 17 18 19 20 21 22 23 24 25 26
  5  6  7 11 12 13 17 18 19 20 25
  8  9 10 14 15 16 17 18 19 20 25
  5  6  7 14 15 16 21 22 23 24 26
  8  9 10 11 12 13 21 22 23 24 26