#dinucleotide	frequency
AA	1680	0.116335433834
AC	272	0.018835260716
AG	772	0.0534589017381
AT	2049	0.141887680909
CA	295	0.020427948203
CC	174	0.0120490270757
CG	143	0.00990236133232
CT	567	0.039263208919
GA	846	0.0585832006094
GC	194	0.0134339727166
GG	495	0.0342774046119
GT	760	0.0526279343536
TA	1951	0.135101447268
TC	539	0.0373242850218
TG	886	0.0613530918911
TT	2818	0.1951388408