,AAA,AA,A,BBB,BB,B,D
AAA,0.999490,0.000000,0.000000,0.000000,0.000000,0.000000,0.000510
AA,0.037490,0.961754,0.000000,0.000000,0.000000,0.000000,0.000756
A,0.000000,0.087767,0.910585,0.000000,0.000000,0.000000,0.001647
BBB,0.000000,0.000000,0.203256,0.696994,0.000000,0.087090,0.012660
BB,0.000000,0.000000,0.000000,0.000000,0.777833,0.000000,0.222167
B,0.000000,0.000000,0.000000,0.000000,0.038422,0.807719,0.153859
D,0.000000,0.000000,0.000000,0.000000,0.000000,0.000000,1.000000