,AAA,AA,A,BBB,BB,B,D
AAA,0.995162,0.004324,0.000000,0.000000,0.000000,0.000000,0.000515
AA,0.008632,0.969786,0.020421,0.000421,0.000000,0.000000,0.000741
A,0.000000,0.046298,0.920993,0.027514,0.001326,0.002210,0.001659
BBB,0.000000,0.000000,0.067269,0.875202,0.030885,0.015794,0.010850
BB,0.000000,0.000000,0.002883,0.055046,0.796592,0.097510,0.047969
B,0.000000,0.000000,0.000000,0.004327,0.012835,0.850303,0.132535
D,0.000000,0.000000,0.000000,0.000000,0.000000,0.000000,1.000000