,AAA,AA,A,BBB,BB,B,D
AAA,0.999594,0.000000,0.000000,0.000000,0.000000,0.000000,0.000406
AA,0.061393,0.893062,0.030264,0.014482,0.000000,0.000000,0.000799
A,0.000000,0.100866,0.860160,0.037238,0.000000,0.000000,0.001736
BBB,0.000000,0.000000,0.067887,0.844886,0.060075,0.012198,0.014954
BB,0.000000,0.000000,0.000000,0.062751,0.845112,0.042148,0.049989
B,0.000000,0.000000,0.000000,0.000000,0.160363,0.660413,0.179224
D,0.000000,0.000000,0.000000,0.000000,0.000000,0.000000,1.000000