a	7	6	3	2	0	0	0	0	10	12	8	3	0
c	2	0	0	9	12	12	0	0	0	0	1	7	5
g	0	0	9	0	0	0	0	0	1	0	1	0	3
t	3	6	0	1	0	0	12	12	1	0	2	2	4
//