#dinucleotide	frequency
AA	2538	0.160247505998
AC	745	0.0470387675212
AG	643	0.0405985604243
AT	2239	0.141368859705
AY	1	6.31392852633e-05
CA	800	0.0505114282106
CC	401	0.0253188533906
CG	129	0.00814496779896
CT	861	0.0543629246117
GA	595	0.0375678747317
GC	273	0.0172370248769
GG	240	0.0151534284632
GR	2	0.000126278570527
GT	428	0.0270236140927
RA	2	0.000126278570527
RT	1	6.31392852633e-05
TA	2229	0.140737466852
TC	772	0.0487435282233
TG	526	0.0332112640485
TR	1	6.31392852633e-05
TT	2411	0.15222881677
YA	1	6.31392852633e-05