,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,0.000000,0.039961,0.893401,0.066638,0.000000,0.000000,0.000000,0.000000
BBB,0.000000,0.000000,0.115165,0.785788,0.076817,0.000000,0.002996,0.019235
BB,0.000000,0.000000,0.000000,0.000000,0.933333,0.060000,0.006667,0.000000
B,0.000000,0.000000,0.000000,0.000000,0.000000,0.825706,0.145713,0.028581
CCC,0.000000,0.000000,0.001000,0.002000,0.003000,0.020000,0.902546,0.071454
D,0.000000,0.000000,0.000000,0.000000,0.000000,0.000000,0.000000,1.000000