C(30,4,2) = 75
Method of Construction: mills, jcta 13 (1972) pp. 55-78.
Lower Bound: Schonheim
1 8 16 23
2 9 17 24
3 10 18 25
4 11 19 26
5 12 20 27
6 13 21 28
7 14 22 29
8 15 23 30
1 9 16 24
2 10 17 25
3 11 18 26
4 12 19 27
5 13 20 28
6 14 21 29
7 15 22 30
1 3 15 20
2 4 16 21
3 5 17 22
4 6 18 23
5 7 19 24
6 8 20 25
7 9 21 26
8 10 22 27
9 11 23 28
10 12 24 29
11 13 25 30
1 12 14 26
2 13 15 27
3 14 16 28
4 15 17 29
5 16 18 30
1 6 17 19
2 7 18 20
3 8 19 21
4 9 20 22
5 10 21 23
6 11 22 24
7 12 23 25
8 13 24 26
9 14 25 27
10 15 26 28
11 16 27 29
12 17 28 30
1 13 18 29
2 14 19 30
1 2 5 11
2 3 6 12
3 4 7 13
4 5 8 14
5 6 9 15
6 7 10 16
7 8 11 17
8 9 12 18
9 10 13 19
10 11 14 20
11 12 15 21
12 13 16 22
13 14 17 23
14 15 18 24
15 16 19 25
16 17 20 26
17 18 21 27
18 19 22 28
19 20 23 29
20 21 24 30
1 21 22 25
2 22 23 26
3 23 24 27
4 24 25 28
5 25 26 29
6 26 27 30
1 7 27 28
2 8 28 29
3 9 29 30
1 4 10 30