IndID	FID	MID	Sex
1	0	0	1
2	0	0	0
3	0	0	1
4	0	0	0
5	0	0	1
6	0	0	0
7	2	1	0
8	2	1	1
9	7	3	0
10	4	8	1
11	9	5	1
12	6	10	0
13	7	8	1
14	9	10	1
15	12	11	1