,AAA,AA,A,BBB,BB,B,D
AAA,0.999491,0.000000,0.000000,0.000000,0.000000,0.000000,0.000509
AA,0.000000,0.999220,0.000000,0.000000,0.000000,0.000000,0.000780
A,0.000000,0.046608,0.895804,0.056033,0.000000,0.000000,0.001555
BBB,0.000000,0.000000,0.062549,0.812465,0.093711,0.000000,0.031275
BB,0.000000,0.000000,0.000000,0.000000,0.837904,0.139651,0.022445
B,0.000000,0.000000,0.000000,0.000000,0.000000,0.666667,0.333333
D,0.000000,0.000000,0.000000,0.000000,0.000000,0.000000,1.000000