,AAA,AA,A,BBB,BB,B,D
AAA,1.000000,0.000000,0.000000,0.000000,0.000000,0.000000,0.000000
AA,0.027765,0.971434,0.000000,0.000000,0.000000,0.000000,0.000801
A,0.000000,0.153639,0.844746,0.000000,0.000000,0.000000,0.001614
BBB,0.000000,0.000000,0.151571,0.833333,0.000000,0.000000,0.015096
BB,0.000000,0.000000,0.000000,0.083300,0.750000,0.166700,0.000000
B,0.000000,0.000000,0.000000,0.000000,0.038241,0.918724,0.043035
D,0.000000,0.000000,0.000000,0.000000,0.000000,0.000000,1.000000