#dinucleotide	frequency
AA	148312	0.0224257462421
AC	304288	0.0460103395041
AG	322914	0.0488267127544
AN	1	1.51206552687e-07
AT	226639	0.0342693018945
CA	325210	0.0491738829994
CC	685633	0.103672202339
CG	971669	0.146922719843
CN	1	1.51206552687e-07
CT	322980	0.0488366923869
GA	460382	0.0696127751392
GC	854482	0.129203277553
GG	683488	0.103347864283
GN	3	4.53619658062e-07
GT	304136	0.0459873561081
NC	1	1.51206552687e-07
NG	3	4.53619658062e-07
NN	1830	0.000276707991418
NT	1	1.51206552687e-07
TA	68250	0.0103198472209
TC	461076	0.0697177124868
TG	324425	0.0490551858555
TT	147746	0.0223401633333