,AAA,AA,A,BBB,BB,B,D
AAA,1.000000,0.000000,0.000000,0.000000,0.000000,0.000000,0.000000
AA,0.000000,0.999247,0.000000,0.000000,0.000000,0.000000,0.000753
A,0.000000,0.081527,0.855758,0.040708,0.020354,0.000000,0.001652
BBB,0.000000,0.000000,0.078805,0.858224,0.052574,0.000000,0.010396
BB,0.000000,0.000000,0.000000,0.064964,0.844180,0.051902,0.038955
B,0.000000,0.000000,0.000000,0.000000,0.083322,0.791628,0.125050
D,0.000000,0.000000,0.000000,0.000000,0.000000,0.000000,1.000000