,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,0.000000,0.984166,0.015834,0.000000,0.000000,0.000000,0.000000,0.000000
A,0.000000,0.010064,0.969700,0.020236,0.000000,0.000000,0.000000,0.000000
BBB,0.000000,0.000000,0.085539,0.854439,0.057026,0.000000,0.002996,0.000000
BB,0.000000,0.000000,0.000000,0.000000,0.789500,0.142110,0.015790,0.052600
B,0.000000,0.000000,0.000000,0.000000,0.000000,0.719282,0.126932,0.153786
CCC,0.000000,0.000000,0.001000,0.002000,0.003000,0.020000,0.524379,0.449621
D,0.000000,0.000000,0.000000,0.000000,0.000000,0.000000,0.000000,1.000000