,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,0.000000,0.990419,0.009581,0.000000,0.000000,0.000000,0.000000,0.000000
A,0.000000,0.044609,0.884037,0.062474,0.000000,0.000000,0.000000,0.008880
BBB,0.000000,0.000000,0.025648,0.868876,0.076833,0.000000,0.002996,0.025648
BB,0.000000,0.000000,0.000000,0.000000,0.796050,0.000000,0.004975,0.198975
B,0.000000,0.000000,0.000000,0.000000,0.000000,0.637470,0.112495,0.250035
CCC,0.000000,0.000000,0.001000,0.002000,0.003000,0.020000,0.598947,0.375053
D,0.000000,0.000000,0.000000,0.000000,0.000000,0.000000,0.000000,1.000000