#dinucleotide	frequency
AA	2290	0.100061172769
AC	2239	0.0978327361706
AG	1030	0.0450056803286
AR	1	4.36948352705e-05
AT	1878	0.0820589006379
CA	2175	0.0950362667133
CC	2243	0.0980075155117
CG	558	0.0243817180809
CT	1829	0.0799178537097
GA	919	0.0401555536136
GC	820	0.0358297649218
GG	669	0.0292318447959
GR	1	4.36948352705e-05
GT	517	0.0225902298348
RG	2	8.73896705409e-05
TA	2055	0.0897928864808
TC	1503	0.0656733374115
TG	666	0.0291007602901
TT	1491	0.0651489993883