,AAA,AA,A,BBB,BB,B,D
AAA,0.983345,0.016147,0.000000,0.000000,0.000000,0.000000,0.000508
AA,0.000000,0.932074,0.067181,0.000000,0.000000,0.000000,0.000744
A,0.000000,0.042076,0.914206,0.042076,0.000000,0.000000,0.001641
BBB,0.000000,0.000000,0.023774,0.762030,0.095211,0.095211,0.023774
BB,0.000000,0.000000,0.000000,0.000000,0.850007,0.049953,0.100041
B,0.000000,0.000000,0.000000,0.000000,0.000000,0.928504,0.071496
D,0.000000,0.000000,0.000000,0.000000,0.000000,0.000000,1.000000