,AAA,AA,A,BBB,BB,B,D
AAA,0.999653,0.000000,0.000000,0.000000,0.000000,0.000000,0.000347
AA,0.000000,0.988162,0.011103,0.000000,0.000000,0.000000,0.000734
A,0.000000,0.023963,0.971352,0.003024,0.000000,0.000000,0.001661
BBB,0.000000,0.000000,0.056005,0.925617,0.007683,0.000000,0.010695
BB,0.000000,0.000000,0.000000,0.006403,0.927293,0.054591,0.011713
B,0.000000,0.000000,0.000000,0.000000,0.000000,0.937747,0.062253
D,0.000000,0.000000,0.000000,0.000000,0.000000,0.000000,1.000000