C(29,4,2) = 73
Method of Construction: simple construction: combined (28,4,2) and (28,3,1)-coverings
Lower Bound: Schonheim
7 12 17 27
6 11 16 26
5 10 15 25
4 9 21 24
3 8 20 23
2 14 19 22
1 13 18 28
7 13 19 24
6 12 18 23
5 11 17 22
4 10 16 28
3 9 15 27
2 8 21 26
1 14 20 25
9 13 25 26
8 12 24 25
11 14 23 24
10 13 22 23
9 12 22 28
8 11 27 28
10 14 26 27
2 6 15 17
1 5 16 21
4 7 15 20
3 6 19 21
2 5 18 20
1 4 17 19
3 7 16 18
4 5 23 27
3 4 22 26
2 3 25 28
1 2 24 27
1 7 23 26
6 7 22 25
5 6 24 28
16 20 22 24
15 19 23 28
18 21 22 27
17 20 26 28
16 19 25 27
15 18 24 26
17 21 23 25
8 10 18 19
9 14 17 18
8 13 16 17
12 14 15 16
11 13 15 21
10 12 20 21
9 11 19 20
1 3 11 12
2 7 10 11
1 6 9 10
5 7 8 9
4 6 8 14
3 5 13 14
2 4 12 13
7 14 21 28
6 13 20 27
5 12 19 26
4 11 18 25
3 10 17 24
2 9 16 23
1 8 15 22
1 2 3 29
4 5 6 29
7 8 9 29
10 11 12 29
13 14 15 29
16 17 18 29
19 20 21 29
22 23 24 29
25 26 27 29
3 10 28 29