,AAA,AA,A,BBB,BB,B,D
AAA,0.999475,0.000000,0.000000,0.000000,0.000000,0.000000,0.000525
AA,0.033304,0.866011,0.099912,0.000000,0.000000,0.000000,0.000773
A,0.000000,0.000000,0.925339,0.048691,0.000000,0.024398,0.001572
BBB,0.000000,0.000000,0.085177,0.869320,0.034120,0.000000,0.011383
BB,0.000000,0.000000,0.000000,0.057120,0.800000,0.114240,0.028640
B,0.000000,0.000000,0.000000,0.000000,0.000000,0.900000,0.100000
D,0.000000,0.000000,0.000000,0.000000,0.000000,0.000000,1.000000