,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,0.083374,0.916626,0.000000,0.000000,0.000000,0.000000,0.000000,0.000000
A,0.000000,0.102050,0.897950,0.000000,0.000000,0.000000,0.000000,0.000000
BBB,0.000000,0.000000,0.057049,0.911431,0.028525,0.000000,0.002996,0.000000
BB,0.000000,0.000000,0.000000,0.114754,0.721311,0.118033,0.013115,0.032787
B,0.000000,0.000000,0.000000,0.000000,0.000000,0.667819,0.117850,0.214331
CCC,0.000000,0.000000,0.001000,0.002000,0.003000,0.020000,0.374000,0.600000
D,0.000000,0.000000,0.000000,0.000000,0.000000,0.000000,0.000000,1.000000