,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,0.000000,0.970045,0.029955,0.000000,0.000000,0.000000,0.000000,0.000000
A,0.000000,0.031482,0.923305,0.045213,0.000000,0.000000,0.000000,0.000000
BBB,0.000000,0.000000,0.100955,0.789007,0.094084,0.000000,0.002996,0.012958
BB,0.000000,0.000000,0.000000,0.000000,0.838881,0.075012,0.008335,0.077771
B,0.000000,0.000000,0.000000,0.000000,0.000000,0.792549,0.139862,0.067589
CCC,0.000000,0.000000,0.001000,0.002000,0.003000,0.020000,0.840113,0.133887
D,0.000000,0.000000,0.000000,0.000000,0.000000,0.000000,0.000000,1.000000