,AAA,AA,A,BBB,BB,B,D
AAA,0.999481,0.000000,0.000000,0.000000,0.000000,0.000000,0.000519
AA,0.000000,0.983219,0.016039,0.000000,0.000000,0.000000,0.000742
A,0.000000,0.000000,0.972342,0.026054,0.000000,0.000000,0.001603
BBB,0.000000,0.000000,0.141056,0.846730,0.000000,0.000000,0.012215
BB,0.000000,0.000000,0.000000,0.000000,0.842158,0.105228,0.052614
B,0.000000,0.000000,0.000000,0.000000,0.000000,0.874953,0.125047
D,0.000000,0.000000,0.000000,0.000000,0.000000,0.000000,1.000000