,AAA,AA,A,BBB,BB,B,D
AAA,0.999818,0.000000,0.000000,0.000000,0.000000,0.000000,0.000182
AA,0.014482,0.970531,0.014482,0.000000,0.000000,0.000000,0.000506
A,0.000000,0.121874,0.815821,0.047328,0.013325,0.000000,0.001652
BBB,0.000000,0.000000,0.056796,0.877283,0.055767,0.000000,0.010154
BB,0.000000,0.000000,0.000000,0.075598,0.859688,0.031391,0.033323
B,0.000000,0.000000,0.000000,0.000000,0.114805,0.786800,0.098395
D,0.000000,0.000000,0.000000,0.000000,0.000000,0.000000,1.000000