,AAA,AA,A,BBB,BB,B,D
AAA,0.999455,0.000000,0.000000,0.000000,0.000000,0.000000,0.000545
AA,0.000000,1.000000,0.000000,0.000000,0.000000,0.000000,0.000000
A,0.000000,0.127457,0.828362,0.042523,0.000000,0.000000,0.001658
BBB,0.000000,0.000000,0.035390,0.907478,0.047186,0.000000,0.009946
BB,0.000000,0.000000,0.000000,0.049186,0.918023,0.000000,0.032791
B,0.000000,0.000000,0.000000,0.000000,0.105242,0.789517,0.105242
D,0.000000,0.000000,0.000000,0.000000,0.000000,0.000000,1.000000