,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,0.000000,0.985280,0.014720,0.000000,0.000000,0.000000,0.000000,0.000000
A,0.000000,0.028556,0.952443,0.019001,0.000000,0.000000,0.000000,0.000000
BBB,0.000000,0.000000,0.076808,0.920197,0.000000,0.000000,0.002996,0.000000
BB,0.000000,0.000000,0.000000,0.000000,0.750071,0.149957,0.016662,0.083310
B,0.000000,0.000000,0.000000,0.000000,0.000000,0.671069,0.118424,0.210507
CCC,0.000000,0.000000,0.001000,0.002000,0.003000,0.020000,0.442090,0.531910
D,0.000000,0.000000,0.000000,0.000000,0.000000,0.000000,0.000000,1.000000