,AAA,AA,A,BBB,BB,B,D
AAA,0.999490,0.000000,0.000000,0.000000,0.000000,0.000000,0.000510
AA,0.000000,0.999261,0.000000,0.000000,0.000000,0.000000,0.000739
A,0.000000,0.064463,0.912427,0.021451,0.000000,0.000000,0.001660
BBB,0.000000,0.000000,0.123257,0.780426,0.000000,0.082222,0.014095
BB,0.000000,0.000000,0.000000,0.151019,0.830773,0.000000,0.018209
B,0.000000,0.000000,0.000000,0.000000,0.047675,0.619041,0.333284
D,0.000000,0.000000,0.000000,0.000000,0.000000,0.000000,1.000000