,AAA,AA,A,BBB,BB,B,D
AAA,0.999443,0.000000,0.000000,0.000000,0.000000,0.000000,0.000557
AA,0.049983,0.949209,0.000000,0.000000,0.000000,0.000000,0.000808
A,0.000000,0.134406,0.825309,0.038384,0.000000,0.000000,0.001902
BBB,0.000000,0.000000,0.083640,0.891822,0.013940,0.000000,0.010597
BB,0.000000,0.000000,0.000000,0.200000,0.450000,0.050000,0.300000
B,0.000000,0.000000,0.000000,0.055556,0.000000,0.666667,0.277778
D,0.000000,0.000000,0.000000,0.000000,0.000000,0.000000,1.000000