C(14,12,2) = 3
Method of Construction: lex covering
Lower Bound: Schonheim
1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 13 14 1 2 3 4 5 6 7 8 11 12 13 14