,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,0.000000,1.000000,0.000000,0.000000,0.000000,0.000000,0.000000,0.000000
A,0.000000,0.127669,0.829738,0.042593,0.000000,0.000000,0.000000,0.000000
BBB,0.000000,0.000000,0.035692,0.913724,0.047589,0.000000,0.002996,0.000000
BB,0.000000,0.000000,0.000000,0.048942,0.913456,0.000000,0.004975,0.032628
B,0.000000,0.000000,0.000000,0.000000,0.105242,0.671089,0.118428,0.105242
CCC,0.000000,0.000000,0.001000,0.002000,0.003000,0.084193,0.572036,0.337771
D,0.000000,0.000000,0.000000,0.000000,0.000000,0.000000,0.000000,1.000000