,AAA,AA,A,BBB,BB,B,D
AAA,0.999484,0.000000,0.000000,0.000000,0.000000,0.000000,0.000516
AA,0.000000,0.979025,0.020248,0.000000,0.000000,0.000000,0.000727
A,0.000000,0.018144,0.971162,0.009072,0.000000,0.000000,0.001622
BBB,0.000000,0.000000,0.069035,0.897883,0.023048,0.000000,0.010035
BB,0.000000,0.000000,0.000000,0.000000,0.896069,0.086741,0.017190
B,0.000000,0.000000,0.000000,0.000000,0.000000,0.939544,0.060456
D,0.000000,0.000000,0.000000,0.000000,0.000000,0.000000,1.000000