C(11,4,2) = 11
Method of Construction: cyclic covering found by a search program
Lower Bound: Schonheim
2 3 4 7 3 4 5 8 4 5 6 9 5 6 7 10 6 7 8 11 1 7 8 9 2 8 9 10 3 9 10 11 1 4 10 11 1 2 5 11 1 2 3 6