,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,0.000000,1.000000,0.000000,0.000000,0.000000,0.000000,0.000000,0.000000
A,0.000000,0.000000,0.500000,0.500000,0.000000,0.000000,0.000000,0.000000
BBB,0.000000,0.000000,0.000000,0.591057,0.296279,0.109664,0.003000,0.000000
BB,0.000000,0.000000,0.000000,0.050023,0.750000,0.134959,0.014995,0.050023
B,0.000000,0.000000,0.000000,0.000000,0.000000,0.495856,0.087504,0.416640
CCC,0.000000,0.000000,0.001000,0.002000,0.003000,0.020000,0.349041,0.624959
D,0.000000,0.000000,0.000000,0.000000,0.000000,0.000000,0.000000,1.000000