C(10,5,4) = 51
Method of Construction: random greedy covering
Lower Bound: Applegate Rains and Sloane; 2002
1 3 4 8 9
1 2 4 6 8
2 3 5 7 9
1 4 5 9 10
2 3 4 6 9
1 3 7 9 10
3 6 7 8 9
1 2 3 5 8
4 5 6 7 10
3 4 5 8 10
4 5 6 8 9
2 4 7 8 9
1 2 5 6 7
1 6 8 9 10
1 4 5 7 8
2 3 5 6 10
1 3 4 5 6
2 3 8 9 10
2 5 7 8 10
2 6 7 9 10
1 2 4 7 10
1 4 6 7 9
1 2 4 5 9
3 5 6 7 8
1 2 7 8 9
2 3 6 7 8
3 4 6 7 8
1 3 4 6 10
1 5 6 8 10
4 7 8 9 10
1 2 3 6 9
3 5 6 9 10
1 3 6 7 8
2 3 4 7 10
2 5 6 8 9
2 4 6 8 10
1 3 5 7 10
3 6 7 8 10
3 4 5 7 9
1 5 6 7 9
1 2 3 8 10
2 4 5 9 10
2 3 4 5 8
5 7 8 9 10
1 3 5 8 9
2 4 5 6 7
1 2 3 4 7
3 4 6 9 10
1 2 6 7 10
1 2 5 9 10
1 4 7 8 10