C(27,14,2) = 6

Method of Construction: lexicographic greedy covering

Lower Bound: Bounds for fixed number of blocks

  1  2  3  4  5  6  7  8  9 10 11 12 13 14
  1 15 16 17 18 19 20 21 22 23 24 25 26 27
  2  3  4  5  6  7  8 15 16 17 18 19 20 21
  2  3  4  5  6  7  8  9 22 23 24 25 26 27
  9 10 11 12 13 14 15 16 17 18 19 20 21 22
  1  2  3  4 10 11 12 13 14 23 24 25 26 27