,AAA,AA,A,BBB,BB,B,D
AAA,0.999474,0.000000,0.000000,0.000000,0.000000,0.000000,0.000526
AA,0.000000,0.999259,0.000000,0.000000,0.000000,0.000000,0.000741
A,0.000000,0.027484,0.970810,0.000000,0.000000,0.000000,0.001705
BBB,0.000000,0.000000,0.000000,0.988048,0.000000,0.000000,0.011952
BB,0.000000,0.000000,0.000000,0.000000,0.961500,0.038500,0.000000
B,0.000000,0.000000,0.000000,0.000000,0.000000,0.938590,0.061410
D,0.000000,0.000000,0.000000,0.000000,0.000000,0.000000,1.000000