size	number	percentage of the total overlap number
1	15	4.07
2	14	3.79
3	11	2.98
4	10	2.71
5	21	5.69
6	10	2.71
7	12	3.25
8	8	2.17
9	16	4.34
10	54	14.63
11	18	4.88
12	14	3.79
13	19	5.15
14	5	1.36
15	18	4.88
16	18	4.88
17	15	4.07
18	9	2.44
19	12	3.25
20	11	2.98
21	12	3.25
22	33	8.94
23	14	3.79
