math	english	sex
2	2	f
1	3	m
4	3	m
1	1	f
1	2	m
4	4	m
3	3	m
3	4	f
1	1	f
1	1	f
4	2	m
4	4	f
2	2	f
4	3	m
2	3	m
4	4	f
1	1	f
4	3	m
4	4	m
1	3	f