#dinucleotide	frequency
AA	3123	0.203069120229
AC	820	0.0533194616035
AG	648	0.0421353794135
AT	2156	0.140191169777
CA	938	0.0609922621757
CC	494	0.0321217244294
CG	149	0.00968853631576
CT	627	0.0407698810066
GA	673	0.0437609727551
GC	220	0.0143052214058
GG	282	0.0183366928929
GT	362	0.0235385915859
TA	2013	0.130892775863
TC	674	0.0438259964887
TG	458	0.0297808700176
TT	1742	0.113271344041