,AAA,AA,A,BBB,BB,B,CCC,D
AAA,1.000000,0.000000,0.000000,0.000000,0.000000,0.000000,0.000000,0.000000
AA,0.000000,0.576715,0.338615,0.084670,0.000000,0.000000,0.000000,0.000000
A,0.000000,0.000000,0.559352,0.440648,0.000000,0.000000,0.000000,0.000000
BBB,0.000000,0.000000,0.017544,0.699909,0.207912,0.071635,0.003000,0.000000
BB,0.000000,0.000000,0.000000,0.068283,0.515874,0.244982,0.027220,0.143640
B,0.000000,0.000000,0.000000,0.000000,0.044442,0.476959,0.084169,0.394430
CCC,0.000000,0.000000,0.001000,0.002000,0.003000,0.048887,0.353468,0.591645
D,0.000000,0.000000,0.000000,0.000000,0.000000,0.000000,0.000000,1.000000