,AAA,AA,A,BBB,BB,B,CCC,D
AAA,0.983845,0.016155,0.000000,0.000000,0.000000,0.000000,0.000000,0.000000
AA,0.000000,0.932769,0.067231,0.000000,0.000000,0.000000,0.000000,0.000000
A,0.000000,0.042146,0.915709,0.042146,0.000000,0.000000,0.000000,0.000000
BBB,0.000000,0.000000,0.023774,0.760530,0.095211,0.093711,0.003000,0.023774
BB,0.000000,0.000000,0.000000,0.000000,0.850007,0.044957,0.004995,0.100041
B,0.000000,0.000000,0.000000,0.000000,0.000000,0.789228,0.139276,0.071496
CCC,0.000000,0.000000,0.001000,0.002000,0.003000,0.020000,0.795260,0.178740
D,0.000000,0.000000,0.000000,0.000000,0.000000,0.000000,0.000000,1.000000