,AAA,AA,A,BBB,BB,B,D
AAA,0.982214,0.017269,0.000000,0.000000,0.000000,0.000000,0.000517
AA,0.000000,0.934398,0.064860,0.000000,0.000000,0.000000,0.000742
A,0.000000,0.042644,0.911134,0.039359,0.000000,0.000000,0.006863
BBB,0.000000,0.000000,0.048934,0.753031,0.094754,0.082267,0.021013
BB,0.000000,0.000000,0.000000,0.000000,0.884298,0.048719,0.066982
B,0.000000,0.000000,0.000000,0.000000,0.000000,0.931108,0.068892
D,0.000000,0.000000,0.000000,0.000000,0.000000,0.000000,1.000000