,AAA,AA,A,BBB,BB,B,CCC,D
AAA,1.000000,0.000000,0.000000,0.000000,0.000000,0.000000,0.000000,0.000000
AA,0.000000,0.986929,0.013071,0.000000,0.000000,0.000000,0.000000,0.000000
A,0.000000,0.026304,0.973696,0.000000,0.000000,0.000000,0.000000,0.000000
BBB,0.000000,0.000000,0.099839,0.897165,0.000000,0.000000,0.002996,0.000000
BB,0.000000,0.000000,0.000000,0.019561,0.941203,0.035312,0.003924,0.000000
B,0.000000,0.000000,0.000000,0.000000,0.000000,0.796875,0.140625,0.062500
CCC,0.000000,0.000000,0.001000,0.002000,0.003000,0.020000,0.817750,0.156250
D,0.000000,0.000000,0.000000,0.000000,0.000000,0.000000,0.000000,1.000000