#dinucleotide	frequency
AA	2560	0.168832025325
AC	512	0.033766405065
AG	500	0.0329750049463
AT	2481	0.163621974543
CA	614	0.040493306074
CC	337	0.0222251533338
CG	80	0.0052760007914
CT	656	0.0432632064895
GA	535	0.0352832552925
GC	178	0.0117391017609
GG	196	0.0129262019389
GT	254	0.0167513025127
TA	2345	0.154652773198
TC	660	0.0435270065291
TG	387	0.0255226538284
TT	2868	0.189144628372