ID test
PO	A	C	G	U
0	1.0	0.0	0.0	0.0
1	0.0	0.0	1.0	0.0
2	0.245473642093	0.0	0.754526357907	0.0
3	0.250575172552	0.0	0.749424827448	0.0
4	0.247874362309	0.0	0.752125637691	0.0