C(18,10,2) = 5
Created by: LJCR
Method of Construction: Multiple of (9,5,2) covering
Lower Bound: Bounds for fixed number of blocks
1 2 3 4 5 10 11 12 13 14
1 6 7 8 9 10 15 16 17 18
2 3 4 6 7 11 12 13 15 16
2 3 4 8 9 11 12 13 17 18
5 6 7 8 9 14 15 16 17 18