,AAA,AA,A,BBB,BB,B,D
AAA,0.999395,0.000000,0.000000,0.000000,0.000000,0.000000,0.000605
AA,0.095124,0.856454,0.047619,0.000000,0.000000,0.000000,0.000803
A,0.000000,0.101484,0.862960,0.033828,0.000000,0.000000,0.001728
BBB,0.000000,0.000000,0.097292,0.875387,0.016195,0.000000,0.011126
BB,0.000000,0.000000,0.000000,0.142804,0.642897,0.000000,0.214299
B,0.000000,0.000000,0.000000,0.076959,0.076959,0.692281,0.153802
D,0.000000,0.000000,0.000000,0.000000,0.000000,0.000000,1.000000