,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,0.043478,0.913043,0.043478,0.000000,0.000000,0.000000,0.000000,0.000000
A,0.000000,0.156895,0.764603,0.058849,0.019653,0.000000,0.000000,0.000000
BBB,0.000000,0.000000,0.056683,0.872192,0.068130,0.000000,0.002996,0.000000
BB,0.000000,0.000000,0.000000,0.112645,0.816860,0.038045,0.004227,0.028222
B,0.000000,0.000000,0.000000,0.000000,0.157903,0.671088,0.118427,0.052582
CCC,0.000000,0.000000,0.001000,0.002000,0.003000,0.126322,0.769710,0.097968
D,0.000000,0.000000,0.000000,0.000000,0.000000,0.000000,0.000000,1.000000