C(9,3,2) = 12
Method of Construction: affine geometry covering
Lower Bound: Schonheim
1 4 7 2 5 8 3 6 9 1 6 8 2 4 9 3 5 7 1 5 9 2 6 7 3 4 8 1 2 3 4 5 6 7 8 9