,AAA,AA,A,BBB,BB,B,D
AAA,0.988297,0.011533,0.000000,0.000000,0.000000,0.000000,0.000169
AA,0.000000,0.991779,0.007470,0.000000,0.000000,0.000000,0.000751
A,0.000000,0.023290,0.955026,0.020028,0.000000,0.000000,0.001657
BBB,0.000000,0.000000,0.056769,0.900917,0.031417,0.000000,0.010898
BB,0.000000,0.000000,0.000000,0.000000,0.839737,0.088126,0.072138
B,0.000000,0.000000,0.000000,0.000000,0.000000,0.854858,0.145142
D,0.000000,0.000000,0.000000,0.000000,0.000000,0.000000,1.000000