,AAA,AA,A,BBB,BB,B,D
AAA,0.999490,0.000000,0.000000,0.000000,0.000000,0.000000,0.000510
AA,0.000000,0.999244,0.000000,0.000000,0.000000,0.000000,0.000756
A,0.000000,0.099809,0.888652,0.000000,0.000000,0.009949,0.001589
BBB,0.000000,0.000000,0.066612,0.866659,0.033364,0.000000,0.033364
BB,0.000000,0.000000,0.000000,0.000000,0.888902,0.000000,0.111098
B,0.000000,0.000000,0.000000,0.000000,0.000000,0.875038,0.124962
D,0.000000,0.000000,0.000000,0.000000,0.000000,0.000000,1.000000