,AAA,AA,A,BBB,BB,B,CCC,D
AAA,0.981525,0.018475,0.000000,0.000000,0.000000,0.000000,0.000000,0.000000
AA,0.000000,0.921862,0.078138,0.000000,0.000000,0.000000,0.000000,0.000000
A,0.000000,0.037050,0.898114,0.046312,0.018525,0.000000,0.000000,0.000000
BBB,0.000000,0.000000,0.000000,0.855700,0.047600,0.093700,0.003000,0.000000
BB,0.000000,0.000000,0.000000,0.000000,0.800000,0.060000,0.006667,0.133333
B,0.000000,0.000000,0.000000,0.000000,0.100072,0.679878,0.119978,0.100072
CCC,0.000000,0.000000,0.001000,0.002000,0.003000,0.080058,0.663762,0.250180
D,0.000000,0.000000,0.000000,0.000000,0.000000,0.000000,0.000000,1.000000