,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,0.009264,0.981472,0.009264,0.000000,0.000000,0.000000,0.000000,0.000000
A,0.000000,0.046726,0.915872,0.037402,0.000000,0.000000,0.000000,0.000000
BBB,0.000000,0.000000,0.021327,0.870775,0.000000,0.062363,0.003000,0.042535
BB,0.000000,0.000000,0.000000,0.000000,0.703690,0.200038,0.022226,0.074046
B,0.000000,0.000000,0.000000,0.000000,0.000000,0.772735,0.136365,0.090900
CCC,0.000000,0.000000,0.001000,0.002000,0.003000,0.020000,0.837650,0.136350
D,0.000000,0.000000,0.000000,0.000000,0.000000,0.000000,0.000000,1.000000