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