C(10,7,3) = 6
Method of Construction: lex covering
Lower Bound: Bounds for fixed number of blocks
1 2 3 4 5 6 7 1 2 3 4 8 9 10 1 5 6 7 8 9 10 2 3 4 5 6 8 9 2 3 4 5 6 7 10 1 2 3 4 7 8 9