,AAA,AA,A,BBB,BB,B,D
AAA,0.981247,0.018208,0.000000,0.000000,0.000000,0.000000,0.000545
AA,0.000000,0.934804,0.064476,0.000000,0.000000,0.000000,0.000720
A,0.000000,0.044333,0.898536,0.033249,0.022166,0.000000,0.001716
BBB,0.000000,0.000000,0.000000,0.933198,0.056574,0.000000,0.010228
BB,0.000000,0.000000,0.000000,0.000000,0.769245,0.153775,0.076980
B,0.000000,0.000000,0.000000,0.000000,0.000000,0.909138,0.090862
D,0.000000,0.000000,0.000000,0.000000,0.000000,0.000000,1.000000