,AAA,AA,A,BBB,BB,B,D
AAA,0.999492,0.000000,0.000000,0.000000,0.000000,0.000000,0.000508
AA,0.000000,0.984552,0.014709,0.000000,0.000000,0.000000,0.000739
A,0.000000,0.028509,0.950893,0.018970,0.000000,0.000000,0.001628
BBB,0.000000,0.000000,0.076055,0.912659,0.000000,0.000000,0.011286
BB,0.000000,0.000000,0.000000,0.000000,0.750071,0.166619,0.083310
B,0.000000,0.000000,0.000000,0.000000,0.000000,0.789493,0.210507
D,0.000000,0.000000,0.000000,0.000000,0.000000,0.000000,1.000000