Information

Total Members: 30
Members per group: 15
Circulation times for covering: 5

Example of combinations

set	group 1	group 2
1	1, 2, 4, 5, 7, 11, 12, 14, 15, 17, 21, 22, 24, 25, 27	3, 6, 8, 9, 10, 13, 16, 18, 19, 20, 23, 26, 28, 29, 30
2	1, 3, 4, 6, 10, 11, 13, 14, 16, 20, 21, 23, 24, 26, 30	2, 5, 7, 8, 9, 12, 15, 17, 18, 19, 22, 25, 27, 28, 29
3	1, 3, 7, 8, 9, 11, 13, 17, 18, 19, 21, 23, 27, 28, 29	2, 4, 5, 6, 10, 12, 14, 15, 16, 20, 22, 24, 25, 26, 30
4	2, 3, 5, 6, 8, 12, 13, 15, 16, 18, 22, 23, 25, 26, 28	1, 4, 7, 9, 10, 11, 14, 17, 19, 20, 21, 24, 27, 29, 30
5	2, 4, 8, 9, 10, 12, 14, 18, 19, 20, 22, 24, 28, 29, 30	1, 3, 5, 6, 7, 11, 13, 15, 16, 17, 21, 23, 25, 26, 27

Frequency of combinations

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30
1	-	1	3	3	2	2	4	1	2	2	5	1	3	3	2	2	4	1	2	2	5	1	3	3	2	2	4	1	2	2
2	-	-	1	3	4	2	2	3	2	2	1	5	1	3	4	2	2	3	2	2	1	5	1	3	4	2	2	3	2	2
3	-	-	-	1	2	4	2	3	2	2	3	1	5	1	2	4	2	3	2	2	3	1	5	1	2	4	2	3	2	2
4	-	-	-	-	2	2	2	1	2	4	3	3	1	5	2	2	2	1	2	4	3	3	1	5	2	2	2	1	2	4
5	-	-	-	-	-	3	3	2	1	1	2	4	2	2	5	3	3	2	1	1	2	4	2	2	5	3	3	2	1	1
6	-	-	-	-	-	-	1	2	1	3	2	2	4	2	3	5	1	2	1	3	2	2	4	2	3	5	1	2	1	3
7	-	-	-	-	-	-	-	2	3	1	4	2	2	2	3	1	5	2	3	1	4	2	2	2	3	1	5	2	3	1
8	-	-	-	-	-	-	-	-	4	2	1	3	3	1	2	2	2	5	4	2	1	3	3	1	2	2	2	5	4	2
9	-	-	-	-	-	-	-	-	-	3	2	2	2	2	1	1	3	4	5	3	2	2	2	2	1	1	3	4	5	3
10	-	-	-	-	-	-	-	-	-	-	2	2	2	4	1	3	1	2	3	5	2	2	2	4	1	3	1	2	3	5
11	-	-	-	-	-	-	-	-	-	-	-	1	3	3	2	2	4	1	2	2	5	1	3	3	2	2	4	1	2	2
12	-	-	-	-	-	-	-	-	-	-	-	-	1	3	4	2	2	3	2	2	1	5	1	3	4	2	2	3	2	2
13	-	-	-	-	-	-	-	-	-	-	-	-	-	1	2	4	2	3	2	2	3	1	5	1	2	4	2	3	2	2
14	-	-	-	-	-	-	-	-	-	-	-	-	-	-	2	2	2	1	2	4	3	3	1	5	2	2	2	1	2	4
15	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	3	3	2	1	1	2	4	2	2	5	3	3	2	1	1
16	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	1	2	1	3	2	2	4	2	3	5	1	2	1	3
17	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	2	3	1	4	2	2	2	3	1	5	2	3	1
18	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	4	2	1	3	3	1	2	2	2	5	4	2
19	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	3	2	2	2	2	1	1	3	4	5	3
20	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	2	2	2	4	1	3	1	2	3	5
21	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	1	3	3	2	2	4	1	2	2
22	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	1	3	4	2	2	3	2	2
23	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	1	2	4	2	3	2	2
24	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	2	2	2	1	2	4
25	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	3	3	2	1	1
26	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	1	2	1	3
27	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	2	3	1
28	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	4	2
29	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	3
30	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-

Frequency of groups

Member	group 1	group 2
1	3	2
2	3	2
3	3	2
4	3	2
5	2	3
6	2	3
7	2	3
8	3	2
9	2	3
10	2	3
11	3	2
12	3	2
13	3	2
14	3	2
15	2	3
16	2	3
17	2	3
18	3	2
19	2	3
20	2	3
21	3	2
22	3	2
23	3	2
24	3	2
25	2	3
26	2	3
27	2	3
28	3	2
29	2	3
30	2	3

Links

Original link :
(Japanese: https://slpr.sakura.ne.jp/sikinote/)
(English: https://slpr.sakura.ne.jp/sikinote/en/)
References: https://ljcr.dmgordon.org/cover/table.html