,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,0.000000,0.955575,0.044425,0.000000,0.000000,0.000000,0.000000,0.000000
A,0.000000,0.040582,0.945926,0.013492,0.000000,0.000000,0.000000,0.000000
BBB,0.000000,0.000000,0.109402,0.819255,0.068347,0.000000,0.002996,0.000000
BB,0.000000,0.000000,0.000000,0.000000,0.849962,0.045045,0.005005,0.099989
B,0.000000,0.000000,0.000000,0.000000,0.000000,0.760532,0.134212,0.105257
CCC,0.000000,0.000000,0.001000,0.002000,0.003000,0.020000,0.816115,0.157885
D,0.000000,0.000000,0.000000,0.000000,0.000000,0.000000,0.000000,1.000000