,AAA,AA,A,BBB,BB,B,CCC,D
AAA,0.500000,0.500000,0.000000,0.000000,0.000000,0.000000,0.000000,0.000000
AA,0.000000,0.800000,0.200000,0.000000,0.000000,0.000000,0.000000,0.000000
A,0.000000,0.078454,0.705876,0.137215,0.000000,0.078454,0.000000,0.000000
BBB,0.000000,0.000000,0.040009,0.851838,0.040009,0.065144,0.003000,0.000000
BB,0.000000,0.000000,0.000000,0.176529,0.735269,0.079382,0.008820,0.000000
B,0.000000,0.000000,0.000000,0.071403,0.071403,0.546436,0.096430,0.214329
CCC,0.000000,0.000000,0.001000,0.002000,0.003000,0.057122,0.401055,0.535823
D,0.000000,0.000000,0.000000,0.000000,0.000000,0.000000,0.000000,1.000000