C(11,6,4) = 32
Method of Construction: nurmela-ostergard simulated annealing covering design
Lower Bound: Schonheim
1 2 3 5 6 8
2 3 4 5 7 8
2 3 5 6 7 9
1 4 5 6 7 9
2 3 4 7 8 9
1 2 6 7 8 9
1 2 3 6 7 10
1 3 4 7 8 10
1 2 5 7 8 10
4 5 6 7 8 10
1 2 4 5 9 10
2 3 4 7 9 10
2 4 6 8 9 10
3 5 6 8 9 10
1 2 3 4 6 11
2 4 5 6 7 11
1 2 4 7 8 11
3 4 6 7 8 11
1 3 4 5 9 11
1 3 4 6 9 11
1 2 3 7 9 11
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2 5 6 8 9 11
1 2 5 6 10 11
3 4 5 6 10 11
1 3 5 7 10 11
2 3 5 8 10 11
1 4 6 8 10 11
2 4 7 9 10 11
1 6 7 9 10 11
1 3 8 9 10 11
5 7 8 9 10 11