,AAA,AA,A,BBB,BB,B,D
AAA,0.999480,0.000000,0.000000,0.000000,0.000000,0.000000,0.000520
AA,0.000000,0.999209,0.000000,0.000000,0.000000,0.000000,0.000791
A,0.000000,0.064451,0.917678,0.016083,0.000000,0.000000,0.001789
BBB,0.000000,0.000000,0.151006,0.838726,0.000000,0.000000,0.010267
BB,0.000000,0.000000,0.000000,0.215280,0.753577,0.000000,0.031143
B,0.000000,0.000000,0.000000,0.000000,0.000000,0.902313,0.097687
D,0.000000,0.000000,0.000000,0.000000,0.000000,0.000000,1.000000