,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,0.037519,0.962481,0.000000,0.000000,0.000000,0.000000,0.000000,0.000000
A,0.000000,0.087912,0.912088,0.000000,0.000000,0.000000,0.000000,0.000000
BBB,0.000000,0.000000,0.205862,0.704431,0.000000,0.086707,0.003000,0.000000
BB,0.000000,0.000000,0.000000,0.000000,0.773964,0.000000,0.004975,0.221061
B,0.000000,0.000000,0.000000,0.000000,0.038422,0.686561,0.121158,0.153859
CCC,0.000000,0.000000,0.001000,0.002000,0.003000,0.030737,0.578614,0.384649
D,0.000000,0.000000,0.000000,0.000000,0.000000,0.000000,0.000000,1.000000