,AAA,AA,A,BBB,BB,B,D
AAA,1.000000,0.000000,0.000000,0.000000,0.000000,0.000000,0.000000
AA,0.083303,0.915848,0.000000,0.000000,0.000000,0.000000,0.000849
A,0.000000,0.101881,0.896467,0.000000,0.000000,0.000000,0.001652
BBB,0.000000,0.000000,0.056380,0.902225,0.028190,0.000000,0.013204
BB,0.000000,0.000000,0.000000,0.114754,0.721311,0.131148,0.032787
B,0.000000,0.000000,0.000000,0.000000,0.000000,0.785669,0.214331
D,0.000000,0.000000,0.000000,0.000000,0.000000,0.000000,1.000000