a	2	6	11	1	0	19	0	21	11	1	0	13	2
c	5	10	5	20	21	0	0	0	4	18	20	2	6
g	7	1	2	0	0	1	0	0	4	1	0	3	6
t	7	4	3	0	0	1	21	0	2	1	1	3	7
//