#dinucleotide	frequency
AA	4572305	0.111619544528
AC	1753617	0.0428094649892
AG	1932658	0.0471802309096
AN	496	1.21083991742e-05
AT	3889624	0.0949538710271
CA	2593742	0.0633186763928
CC	1072595	0.0261842911537
CG	422144	0.0103054194778
CN	203	4.95565530717e-06
CT	1926767	0.0470364192573
GA	2386425	0.058257634071
GC	812906	0.0198447385869
GG	1069584	0.0261107863353
GN	281	6.85979872569e-06
GT	1746749	0.04264180272
NA	464	1.13272121307e-05
NC	267	6.51802939416e-06
NG	229	5.59036978001e-06
NN	4667579	0.113945382478
NT	450	1.09854427992e-05
TA	2595783	0.0633685014789
TC	2376034	0.0580039679908
TG	2591387	0.0632611859088
TN	430	1.0497200897e-05
TT	4550582	0.111089240586