a	0	4	7	0	0	15	0	16	5	0	0	11	1
c	4	9	5	16	16	0	0	0	5	16	16	0	5
g	6	0	2	0	0	0	0	0	4	0	0	3	6
t	6	3	2	0	0	1	16	0	2	0	0	2	4
//