,AAA,AA,A,BBB,BB,B,CCC,D
AAA,0.996497,0.003503,0.000000,0.000000,0.000000,0.000000,0.000000,0.000000
AA,0.007287,0.972014,0.020699,0.000000,0.000000,0.000000,0.000000,0.000000
A,0.000000,0.000000,0.991024,0.008976,0.000000,0.000000,0.000000,0.000000
BBB,0.000000,0.000000,0.095137,0.901867,0.000000,0.000000,0.002996,0.000000
BB,0.000000,0.000000,0.000000,0.000000,0.851908,0.133283,0.014809,0.000000
B,0.000000,0.000000,0.000000,0.000000,0.000000,0.850000,0.150000,0.000000
CCC,0.000000,0.000000,0.001000,0.002000,0.003000,0.020000,0.974000,0.000000
D,0.000000,0.000000,0.000000,0.000000,0.000000,0.000000,0.000000,1.000000