,AAA,AA,A,BBB,BB,B,D
AAA,0.999654,0.000000,0.000000,0.000000,0.000000,0.000000,0.000346
AA,0.000000,0.969308,0.029932,0.000000,0.000000,0.000000,0.000760
A,0.000000,0.031432,0.921828,0.045140,0.000000,0.000000,0.001601
BBB,0.000000,0.000000,0.100712,0.788730,0.093978,0.000000,0.016580
BB,0.000000,0.000000,0.000000,0.000000,0.832355,0.082881,0.084765
B,0.000000,0.000000,0.000000,0.000000,0.000000,0.926002,0.073998
D,0.000000,0.000000,0.000000,0.000000,0.000000,0.000000,1.000000