,AAA,AA,A,BBB,BB,B,CCC,D
AAA,0.987769,0.012231,0.000000,0.000000,0.000000,0.000000,0.000000,0.000000
AA,0.000000,0.942411,0.057589,0.000000,0.000000,0.000000,0.000000,0.000000
A,0.000000,0.044707,0.890625,0.044093,0.020575,0.000000,0.000000,0.000000
BBB,0.000000,0.000000,0.000000,0.883788,0.058686,0.054528,0.002999,0.000000
BB,0.000000,0.000000,0.000000,0.000000,0.824613,0.066133,0.009006,0.100248
B,0.000000,0.000000,0.000000,0.000000,0.033357,0.696715,0.122950,0.146978
CCC,0.000000,0.000000,0.001000,0.002000,0.003000,0.040019,0.625156,0.328824
D,0.000000,0.000000,0.000000,0.000000,0.000000,0.000000,0.000000,1.000000