,AAA,AA,A,BBB,BB,B,CCC,D
AAA,0.964320,0.035680,0.000000,0.000000,0.000000,0.000000,0.000000,0.000000
AA,0.000000,0.932853,0.067147,0.000000,0.000000,0.000000,0.000000,0.000000
A,0.000000,0.049476,0.901049,0.039623,0.000000,0.000000,0.000000,0.009853
BBB,0.000000,0.000000,0.057122,0.770011,0.057122,0.084183,0.003000,0.028561
BB,0.000000,0.000000,0.000000,0.000000,0.875014,0.037462,0.004162,0.083361
B,0.000000,0.000000,0.000000,0.000000,0.000000,0.789319,0.139292,0.071390
CCC,0.000000,0.000000,0.001000,0.002000,0.003000,0.020000,0.795526,0.178474
D,0.000000,0.000000,0.000000,0.000000,0.000000,0.000000,0.000000,1.000000