,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,0.014086,0.978922,0.006992,0.000000,0.000000,0.000000,0.000000,0.000000
A,0.000000,0.000000,0.990854,0.009146,0.000000,0.000000,0.000000,0.000000
BBB,0.000000,0.000000,0.000000,0.964769,0.032236,0.000000,0.002996,0.000000
BB,0.000000,0.000000,0.000000,0.000000,0.928580,0.032139,0.003571,0.035710
B,0.000000,0.000000,0.000000,0.000000,0.000000,0.799955,0.141168,0.058877
CCC,0.000000,0.000000,0.001000,0.002000,0.003000,0.020000,0.876927,0.097073
D,0.000000,0.000000,0.000000,0.000000,0.000000,0.000000,0.000000,1.000000