#dinucleotide	frequency
AA	2772250	0.0846153085445
AC	1804035	0.0550632079178
AG	1930637	0.0589273858572
AN	3	9.15667510627e-08
AT	2608300	0.079611185599
CA	2342306	0.0714924501382
CC	1350249	0.0412126380186
CG	1640820	0.0500815188262
CN	2	6.10445007085e-08
CT	1931576	0.0589560462502
GA	2318239	0.070757871139
GC	1788840	0.0545994223237
GG	1349968	0.0412040612662
GN	3	9.15667510627e-08
GT	1807520	0.0551695779603
NA	8	2.44178002834e-07
NG	1	3.05222503542e-08
NN	460	1.4040235163e-05
NT	3	9.15667510627e-08
TA	1682360	0.051349413106
TC	2321846	0.070867964896
TG	2343126	0.0715174783835
TN	4	1.22089001417e-07
TT	2770428	0.0845596970044