C(19,10,2) = 6

Method of Construction: lex covering

Lower Bound: Bounds for fixed number of blocks

  1  2  3  4  5  6  7  8  9 10
  1 11 12 13 14 15 16 17 18 19
  2  3  4  5  6 11 12 13 14 15
  2  3  4  5  6  7 16 17 18 19
  7  8  9 10 11 12 13 14 15 16
  1  2  3  4  8  9 10 17 18 19