,AAA,AA,A,BBB,BB,B,D
AAA,0.999660,0.000000,0.000000,0.000000,0.000000,0.000000,0.000340
AA,0.000000,0.999255,0.000000,0.000000,0.000000,0.000000,0.000745
A,0.000000,0.080763,0.911025,0.000000,0.000000,0.006626,0.001587
BBB,0.000000,0.000000,0.056721,0.899728,0.020130,0.000000,0.023421
BB,0.000000,0.000000,0.000000,0.000000,0.946936,0.000000,0.053064
B,0.000000,0.000000,0.000000,0.000000,0.000000,0.850017,0.149983
D,0.000000,0.000000,0.000000,0.000000,0.000000,0.000000,1.000000