,AAA,AA,A,BBB,BB,B,D
AAA,0.999491,0.000000,0.000000,0.000000,0.000000,0.000000,0.000509
AA,0.000000,0.999247,0.000000,0.000000,0.000000,0.000000,0.000753
A,0.000000,0.000000,0.948301,0.049885,0.000000,0.000000,0.001814
BBB,0.000000,0.000000,0.000000,0.989512,0.000000,0.000000,0.010488
BB,0.000000,0.000000,0.000000,0.000000,0.975185,0.000000,0.024815
B,0.000000,0.000000,0.000000,0.000000,0.105718,0.845857,0.048426
D,0.000000,0.000000,0.000000,0.000000,0.000000,0.000000,1.000000