,AAA,AA,A,BBB,BB,B,D
AAA,0.999484,0.000000,0.000000,0.000000,0.000000,0.000000,0.000516
AA,0.000000,0.986124,0.013142,0.000000,0.000000,0.000000,0.000734
A,0.000000,0.006441,0.967305,0.024658,0.000000,0.000000,0.001597
BBB,0.000000,0.000000,0.103908,0.851404,0.033179,0.000000,0.011510
BB,0.000000,0.000000,0.017561,0.000000,0.807022,0.122785,0.052632
B,0.000000,0.000000,0.000000,0.000000,0.000000,0.890565,0.109435
D,0.000000,0.000000,0.000000,0.000000,0.000000,0.000000,1.000000