,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,0.081732,0.885698,0.032570,0.000000,0.000000,0.000000,0.000000,0.000000
A,0.000000,0.105432,0.857125,0.037443,0.000000,0.000000,0.000000,0.000000
BBB,0.000000,0.000000,0.118503,0.855562,0.022940,0.000000,0.002996,0.000000
BB,0.000000,0.000000,0.000000,0.180688,0.579904,0.029986,0.004990,0.204431
B,0.000000,0.000000,0.000000,0.067996,0.025653,0.587401,0.103659,0.215291
CCC,0.000000,0.000000,0.001000,0.002000,0.003000,0.033856,0.478994,0.481151
D,0.000000,0.000000,0.000000,0.000000,0.000000,0.000000,0.000000,1.000000