C(8,7,5) = 6
Method of Construction: lex covering
Lower Bound: Schonheim
1 2 3 4 5 6 7 1 2 3 4 5 6 8 1 2 3 4 5 7 8 1 2 3 4 6 7 8 1 2 3 5 6 7 8 1 2 4 5 6 7 8