#dinucleotide	frequency
AA	3271300	0.127178302129
AC	1287724	0.0500628349374
AG	1244739	0.04839170746
AN	47	1.82721859813e-06
AT	2949011	0.114648675432
CA	1706502	0.0663436636627
CC	768227	0.0298663545103
CG	360214	0.014004036598
CN	4	1.55507965798e-07
CT	1243991	0.0483626274704
GA	1478644	0.057485230145
GC	544552	0.0211705434479
GG	781357	0.0303768094081
GN	4	1.55507965798e-07
GT	1302757	0.0506472727499
NA	46	1.78834160668e-06
NC	1	3.88769914496e-08
NG	4	1.55507965798e-07
NN	5	1.94384957248e-07
NT	45	1.74946461523e-06
TA	2296328	0.0892743240215
TC	1478438	0.0574772214847
TG	1721023	0.0669081964555
TN	41	1.59395664943e-06
TT	3287151	0.127794541321