#dinucleotide	frequency
AA	1536	0.0911951552574
AC	1422	0.0844267648281
AG	892	0.0529596865167
AT	1095	0.0650121712284
CA	1506	0.0894139998813
CC	1857	0.110253517782
CG	499	0.0296265510895
CT	1492	0.0885827940391
GA	720	0.0427477290269
GC	813	0.0482693106929
GG	518	0.030754616161
GT	458	0.0271923054088
TA	1183	0.070236893665
TC	1263	0.0749866413347
TG	599	0.0355637356765
TT	990	0.058778127412