,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,0.033387,0.927049,0.039565,0.000000,0.000000,0.000000,0.000000,0.000000
A,0.000000,0.030441,0.951364,0.018196,0.000000,0.000000,0.000000,0.000000
BBB,0.000000,0.000000,0.154455,0.823274,0.019275,0.000000,0.002996,0.000000
BB,0.000000,0.000000,0.000000,0.000000,0.790519,0.188533,0.020948,0.000000
B,0.000000,0.000000,0.022231,0.000000,0.037026,0.799631,0.141111,0.000000
CCC,0.000000,0.000000,0.001000,0.002000,0.003000,0.042954,0.951046,0.000000
D,0.000000,0.000000,0.000000,0.000000,0.000000,0.000000,0.000000,1.000000