Information

Total Members: 30
Members per group: 15
Circulation times for covering: 7

Example of combinations

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

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

Frequency of groups

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

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