,AAA,AA,A,BBB,BB,B,D
AAA,0.999490,0.000000,0.000000,0.000000,0.000000,0.000000,0.000510
AA,0.012308,0.986946,0.000000,0.000000,0.000000,0.000000,0.000747
A,0.000000,0.075845,0.922485,0.000000,0.000000,0.000000,0.001670
BBB,0.000000,0.000000,0.123567,0.741405,0.000000,0.123567,0.011460
BB,0.000000,0.000000,0.000000,0.111081,0.666756,0.111081,0.111081
B,0.000000,0.000000,0.000000,0.000000,0.039951,0.680042,0.280007
D,0.000000,0.000000,0.000000,0.000000,0.000000,0.000000,1.000000