,AAA,AA,A,BBB,BB,B,D
AAA,0.999491,0.000000,0.000000,0.000000,0.000000,0.000000,0.000509
AA,0.000000,0.983218,0.016000,0.000000,0.000000,0.000000,0.000782
A,0.000000,0.027453,0.943470,0.027453,0.000000,0.000000,0.001623
BBB,0.000000,0.000000,0.000000,0.944155,0.045004,0.000000,0.010841
BB,0.000000,0.000000,0.000000,0.000000,0.982112,0.000000,0.017888
B,0.000000,0.000000,0.000000,0.000000,0.000000,1.000000,0.000000
D,0.000000,0.000000,0.000000,0.000000,0.000000,0.000000,1.000000