,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,0.000000,0.953466,0.046534,0.000000,0.000000,0.000000,0.000000,0.000000
A,0.000000,0.017851,0.964299,0.017851,0.000000,0.000000,0.000000,0.000000
BBB,0.000000,0.000000,0.136149,0.830625,0.030231,0.000000,0.002996,0.000000
BB,0.000000,0.000000,0.000000,0.000000,0.857169,0.128548,0.014283,0.000000
B,0.000000,0.000000,0.066692,0.000000,0.000000,0.793311,0.139996,0.000000
CCC,0.000000,0.000000,0.001000,0.002000,0.003000,0.020000,0.974000,0.000000
D,0.000000,0.000000,0.000000,0.000000,0.000000,0.000000,0.000000,1.000000