,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,0.002562,0.989769,0.007670,0.000000,0.000000,0.000000,0.000000,0.000000
A,0.000000,0.032033,0.957316,0.010651,0.000000,0.000000,0.000000,0.000000
BBB,0.000000,0.000000,0.070225,0.926780,0.000000,0.000000,0.002996,0.000000
BB,0.000000,0.000000,0.000000,0.036842,0.912222,0.042857,0.008079,0.000000
B,0.000000,0.000000,0.000000,0.000000,0.000000,0.850000,0.150000,0.000000
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