,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,0.000000,0.992953,0.007047,0.000000,0.000000,0.000000,0.000000,0.000000
A,0.000000,0.020222,0.979778,0.000000,0.000000,0.000000,0.000000,0.000000
BBB,0.000000,0.000000,0.053973,0.943031,0.000000,0.000000,0.002996,0.000000
BB,0.000000,0.000000,0.000000,0.000000,0.967756,0.029020,0.003224,0.000000
B,0.000000,0.000000,0.000000,0.000000,0.058847,0.749959,0.132346,0.058847
CCC,0.000000,0.000000,0.001000,0.002000,0.003000,0.047078,0.799804,0.147119
D,0.000000,0.000000,0.000000,0.000000,0.000000,0.000000,0.000000,1.000000