,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,0.000000,0.969894,0.030106,0.000000,0.000000,0.000000,0.000000,0.000000
A,0.000000,0.052662,0.873681,0.052662,0.020996,0.000000,0.000000,0.000000
BBB,0.000000,0.000000,0.000000,0.855732,0.071384,0.069884,0.003000,0.000000
BB,0.000000,0.000000,0.000000,0.000000,0.904594,0.000000,0.004975,0.090431
B,0.000000,0.000000,0.000000,0.000000,0.000000,0.637500,0.112500,0.250000
CCC,0.000000,0.000000,0.001000,0.002000,0.003000,0.020000,0.374000,0.600000
D,0.000000,0.000000,0.000000,0.000000,0.000000,0.000000,0.000000,1.000000