,AAA,AA,A,BBB,BB,B,D
AAA,0.999485,0.000000,0.000000,0.000000,0.000000,0.000000,0.000515
AA,0.033360,0.926329,0.039534,0.000000,0.000000,0.000000,0.000777
A,0.000000,0.030383,0.949557,0.018161,0.000000,0.000000,0.001899
BBB,0.000000,0.000000,0.153141,0.817738,0.019109,0.000000,0.010013
BB,0.000000,0.000000,0.000000,0.000000,0.765429,0.202865,0.031706
B,0.000000,0.000000,0.020575,0.000000,0.034926,0.882136,0.062364
D,0.000000,0.000000,0.000000,0.000000,0.000000,0.000000,1.000000