,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,0.043478,0.913043,0.000000,0.043478,0.000000,0.000000,0.000000,0.000000
A,0.000000,0.131585,0.842073,0.026342,0.000000,0.000000,0.000000,0.000000
BBB,0.000000,0.000000,0.123296,0.792921,0.068526,0.012256,0.003000,0.000000
BB,0.000000,0.000000,0.000000,0.017244,0.844808,0.062077,0.006897,0.068974
B,0.000000,0.000000,0.000000,0.000000,0.222274,0.566667,0.100000,0.111059
CCC,0.000000,0.000000,0.001000,0.002000,0.003000,0.177819,0.637358,0.178823
D,0.000000,0.000000,0.000000,0.000000,0.000000,0.000000,0.000000,1.000000