,AAA,AA,A,BBB,BB,B,CCC,D
AAA,0.981782,0.018218,0.000000,0.000000,0.000000,0.000000,0.000000,0.000000
AA,0.000000,0.935477,0.064523,0.000000,0.000000,0.000000,0.000000,0.000000
A,0.000000,0.044409,0.900080,0.033307,0.022204,0.000000,0.000000,0.000000
BBB,0.000000,0.000000,0.000000,0.939931,0.057073,0.000000,0.002996,0.000000
BB,0.000000,0.000000,0.000000,0.000000,0.769245,0.138398,0.015378,0.076980
B,0.000000,0.000000,0.000000,0.000000,0.000000,0.772767,0.136371,0.090862
CCC,0.000000,0.000000,0.001000,0.002000,0.003000,0.020000,0.837707,0.136293
D,0.000000,0.000000,0.000000,0.000000,0.000000,0.000000,0.000000,1.000000