#dinucleotide	frequency
AA	1649	0.103398545272
AC	714	0.0447705041384
AG	777	0.0487208427389
AT	2033	0.127476799599
CA	792	0.0496613995485
CC	451	0.0282794080762
CG	170	0.0106596438425
CN	1	6.27037873088e-05
CT	855	0.053611738149
GA	633	0.0396914973664
GC	360	0.0225733634312
GG	537	0.0336719337848
GT	836	0.0524203661901
NA	1	6.27037873088e-05
TA	2097	0.131489841986
TC	744	0.0466516177577
TG	882	0.0553047404063
TT	2416	0.151492350138