,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,0.012317,0.987683,0.000000,0.000000,0.000000,0.000000,0.000000,0.000000
A,0.000000,0.075972,0.924028,0.000000,0.000000,0.000000,0.000000,0.000000
BBB,0.000000,0.000000,0.125000,0.748500,0.000000,0.123500,0.003000,0.000000
BB,0.000000,0.000000,0.000000,0.111081,0.666756,0.099973,0.011108,0.111081
B,0.000000,0.000000,0.000000,0.000000,0.039951,0.578036,0.102006,0.280007
CCC,0.000000,0.000000,0.001000,0.002000,0.003000,0.031961,0.362039,0.600000
D,0.000000,0.000000,0.000000,0.000000,0.000000,0.000000,0.000000,1.000000