,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,0.129019,0.677454,0.193528,0.000000,0.000000,0.000000,0.000000,0.000000
A,0.000000,0.020426,0.938721,0.040853,0.000000,0.000000,0.000000,0.000000
BBB,0.000000,0.000000,0.053240,0.917088,0.026677,0.000000,0.002996,0.000000
BB,0.000000,0.000000,0.035714,0.107143,0.607143,0.192857,0.021429,0.035714
B,0.000000,0.000000,0.000000,0.000000,0.000000,0.784560,0.138452,0.076988
CCC,0.000000,0.000000,0.001000,0.002000,0.003000,0.020000,0.808039,0.165961
D,0.000000,0.000000,0.000000,0.000000,0.000000,0.000000,0.000000,1.000000