,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,0.023219,0.930230,0.046551,0.000000,0.000000,0.000000,0.000000,0.000000
A,0.000000,0.036401,0.945398,0.018201,0.000000,0.000000,0.000000,0.000000
BBB,0.000000,0.000000,0.168944,0.812682,0.015378,0.000000,0.002996,0.000000
BB,0.000000,0.000000,0.000000,0.000000,0.800048,0.179957,0.019995,0.000000
B,0.000000,0.000000,0.000000,0.000000,0.111079,0.755583,0.133338,0.000000
CCC,0.000000,0.000000,0.001000,0.002000,0.003000,0.088863,0.905137,0.000000
D,0.000000,0.000000,0.000000,0.000000,0.000000,0.000000,0.000000,1.000000