,AAA,AA,A,BBB,BB,B,D
AAA,0.999451,0.000000,0.000000,0.000000,0.000000,0.000000,0.000549
AA,0.000000,0.969166,0.030083,0.000000,0.000000,0.000000,0.000751
A,0.000000,0.052571,0.872178,0.052571,0.020960,0.000000,0.001720
BBB,0.000000,0.000000,0.000000,0.847407,0.070566,0.070566,0.011461
BB,0.000000,0.000000,0.000000,0.000000,0.909117,0.000000,0.090883
B,0.000000,0.000000,0.000000,0.000000,0.000000,0.750000,0.250000
D,0.000000,0.000000,0.000000,0.000000,0.000000,0.000000,1.000000