#dinucleotide	frequency
AA	1495940	0.109100554561
AC	742825	0.0541750467543
AG	833191	0.0607655388285
AN	289	2.10770888325e-05
AT	1116709	0.0814428193531
CA	897814	0.0654785655123
CC	465560	0.0339538044182
CG	340924	0.0248639634364
CN	461	3.36212385875e-05
CT	840563	0.0613031869215
GA	895865	0.0653364227921
GC	433703	0.0316304382627
GG	451925	0.0329593888257
GN	206	1.50238072647e-05
GT	731170	0.0533250347462
NA	626	4.56548706199e-05
NC	183	1.33463918905e-05
NG	561	4.09143489101e-05
NN	292565	0.0213370882155
NT	198	1.44403584389e-05
TA	898727	0.0655451516095
TC	903042	0.06585984932
TG	886267	0.0646364300633
TN	612	4.46338351747e-05
TT	1481645	0.10805800444