,AAA,AA,A,BBB,BB,B,D
AAA,0.982100,0.017900,0.000000,0.000000,0.000000,0.000000,0.000000
AA,0.000000,0.991526,0.007700,0.000000,0.000000,0.000000,0.000774
A,0.000000,0.021036,0.966711,0.010518,0.000000,0.000000,0.001736
BBB,0.000000,0.000000,0.047099,0.894882,0.047099,0.000000,0.010920
BB,0.000000,0.000000,0.000000,0.000000,0.888902,0.000000,0.111098
B,0.000000,0.000000,0.000000,0.000000,0.000000,0.900036,0.099964
D,0.000000,0.000000,0.000000,0.000000,0.000000,0.000000,1.000000