,AAA,AA,A,BBB,BB,B,CCC,D
AAA,0.985975,0.014025,0.000000,0.000000,0.000000,0.000000,0.000000,0.000000
AA,0.024314,0.929246,0.044250,0.001037,0.000576,0.000576,0.000000,0.000000
A,0.000000,0.140393,0.803316,0.043990,0.002942,0.006418,0.000000,0.002942
BBB,0.000000,0.000972,0.210919,0.684066,0.045845,0.034301,0.003000,0.020897
BB,0.000000,0.000000,0.023439,0.179363,0.441274,0.137580,0.015287,0.203057
B,0.000000,0.000000,0.000000,0.029265,0.014633,0.366781,0.064726,0.524595
CCC,0.000000,0.000000,0.001000,0.002000,0.003000,0.011706,0.195401,0.786893
D,0.000000,0.000000,0.000000,0.000000,0.000000,0.000000,0.000000,1.000000