,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,0.000000,1.000000,0.000000,0.000000,0.000000,0.000000,0.000000,0.000000
A,0.000000,0.000000,0.950024,0.049976,0.000000,0.000000,0.000000,0.000000
BBB,0.000000,0.000000,0.000000,0.997004,0.000000,0.000000,0.002996,0.000000
BB,0.000000,0.000000,0.000000,0.000000,0.995025,0.000000,0.004975,0.000000
B,0.000000,0.000000,0.000000,0.000000,0.111098,0.755567,0.133335,0.000000
CCC,0.000000,0.000000,0.001000,0.002000,0.003000,0.088878,0.905122,0.000000
D,0.000000,0.000000,0.000000,0.000000,0.000000,0.000000,0.000000,1.000000