,AAA,AA,A,BBB,BB,B,D
AAA,0.999421,0.000000,0.000000,0.000000,0.000000,0.000000,0.000579
AA,0.081663,0.884953,0.032542,0.000000,0.000000,0.000000,0.000842
A,0.000000,0.105243,0.855610,0.037377,0.000000,0.000000,0.001770
BBB,0.000000,0.000000,0.117345,0.848821,0.022715,0.000000,0.011119
BB,0.000000,0.000000,0.000000,0.180925,0.580971,0.033318,0.204786
B,0.000000,0.000000,0.000000,0.067996,0.025653,0.691059,0.215292
D,0.000000,0.000000,0.000000,0.000000,0.000000,0.000000,1.000000