,AAA,AA,A,BBB,BB,B,D
AAA,0.999482,0.000000,0.000000,0.000000,0.000000,0.000000,0.000518
AA,0.000000,0.999235,0.000000,0.000000,0.000000,0.000000,0.000765
A,0.000000,0.044629,0.892891,0.053554,0.000000,0.000000,0.008926
BBB,0.000000,0.000000,0.044044,0.880146,0.066014,0.000000,0.009796
BB,0.000000,0.000000,0.000000,0.000000,0.979020,0.000000,0.020980
B,0.000000,0.000000,0.000000,0.000000,0.000000,0.444460,0.555540
D,0.000000,0.000000,0.000000,0.000000,0.000000,0.000000,1.000000