,AAA,AA,A,BBB,BB,B,D
AAA,0.967296,0.032196,0.000000,0.000000,0.000000,0.000000,0.000508
AA,0.013441,0.985837,0.000000,0.000000,0.000000,0.000000,0.000722
A,0.000000,0.000000,0.987941,0.010266,0.000000,0.000000,0.001793
BBB,0.000000,0.000000,0.000000,0.986580,0.000000,0.000000,0.013420
BB,0.000000,0.000000,0.000000,0.000000,0.898573,0.081733,0.019695
B,0.000000,0.000000,0.000000,0.000000,0.000000,0.799944,0.200056
D,0.000000,0.000000,0.000000,0.000000,0.000000,0.000000,1.000000