C(17,11,2) = 4

Method of Construction: lex covering

Lower Bound: Schonheim

  1  2  3  4  5  6  7  8  9 10 11
  1  2  3  4  5 12 13 14 15 16 17
  6  7  8  9 10 11 12 13 14 15 16
  1  2  3  4  6  7  8  9 10 11 17