,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,0.033330,0.866681,0.099989,0.000000,0.000000,0.000000,0.000000,0.000000
A,0.000000,0.000000,0.926796,0.048768,0.000000,0.024436,0.000000,0.000000
BBB,0.000000,0.000000,0.086029,0.876515,0.034461,0.000000,0.002996,0.000000
BB,0.000000,0.000000,0.000000,0.057120,0.800000,0.102816,0.011424,0.028640
B,0.000000,0.000000,0.000000,0.000000,0.000000,0.765000,0.135000,0.100000
CCC,0.000000,0.000000,0.001000,0.002000,0.003000,0.020000,0.624838,0.349162
D,0.000000,0.000000,0.000000,0.000000,0.000000,0.000000,0.000000,1.000000