,AAA,AA,A,BBB,BB,B,D
AAA,1.000000,0.000000,0.000000,0.000000,0.000000,0.000000,0.000000
AA,0.009146,0.980960,0.009146,0.000000,0.000000,0.000000,0.000748
A,0.000000,0.062991,0.899461,0.035995,0.000000,0.000000,0.001553
BBB,0.000000,0.000000,0.029368,0.853046,0.000000,0.088218,0.029368
BB,0.000000,0.000000,0.000000,0.058824,0.470588,0.352941,0.117647
B,0.000000,0.000000,0.000000,0.000000,0.000000,0.930282,0.069718
D,0.000000,0.000000,0.000000,0.000000,0.000000,0.000000,1.000000