ID test
PO	A	C	G	U
0	0.163816381638	0.163716371637	0.508750875088	0.163716371637
1	0.0	0.0	1.0	0.0
2	0.0	0.0	0.0	1.0
3	0.0	0.34503450345	0.0	0.65496549655
4	0.0	0.0	1.0	0.0
5	0.0863086308631	0.741274127413	0.0862086208621	0.0862086208621