,AAA,AA,A,BBB,BB,B,CCC,D
AAA,1.000000,0.000000,0.000000,0.000000,0.000000,0.000000,0.000000,0.000000
AA,0.049979,0.950021,0.000000,0.000000,0.000000,0.000000,0.000000,0.000000
A,0.000000,0.106349,0.829818,0.063832,0.000000,0.000000,0.000000,0.000000
BBB,0.000000,0.000000,0.030564,0.876112,0.061259,0.008688,0.003000,0.020376
BB,0.000000,0.000000,0.000000,0.095924,0.862930,0.024650,0.002739,0.013758
B,0.000000,0.000000,0.000000,0.000000,0.076950,0.653777,0.115372,0.153901
CCC,0.000000,0.000000,0.001000,0.002000,0.003000,0.061560,0.332440,0.600000
D,0.000000,0.000000,0.000000,0.000000,0.000000,0.000000,0.000000,1.000000