,AAA,AA,A,BBB,BB,B,D
AAA,0.999661,0.000000,0.000000,0.000000,0.000000,0.000000,0.000339
AA,0.002489,0.996775,0.000000,0.000000,0.000000,0.000000,0.000736
A,0.000000,0.006869,0.944079,0.047271,0.000000,0.000000,0.001782
BBB,0.000000,0.000000,0.035633,0.952001,0.000000,0.000000,0.012367
BB,0.000000,0.000000,0.000000,0.000000,0.934255,0.042471,0.023274
B,0.000000,0.000000,0.000000,0.000000,0.035239,0.906300,0.058460
D,0.000000,0.000000,0.000000,0.000000,0.000000,0.000000,1.000000