,AAA,AA,A,BBB,BB,B,CCC,D
AAA,1.000000,0.000000,0.000000,0.000000,0.000000,0.000000,0.000000,0.000000
AA,0.000000,1.000000,0.000000,0.000000,0.000000,0.000000,0.000000,0.000000
A,0.000000,0.098747,0.888936,0.012317,0.000000,0.000000,0.000000,0.000000
BBB,0.000000,0.000000,0.054093,0.863333,0.000000,0.079574,0.003000,0.000000
BB,0.000000,0.000000,0.000000,0.000000,0.533294,0.300044,0.033338,0.133324
B,0.000000,0.000000,0.000000,0.000000,0.000000,0.746952,0.131815,0.121233
CCC,0.000000,0.000000,0.001000,0.002000,0.003000,0.020000,0.670918,0.303082
D,0.000000,0.000000,0.000000,0.000000,0.000000,0.000000,0.000000,1.000000