,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,0.000000,1.000000,0.000000,0.000000,0.000000,0.000000,0.000000,0.000000
A,0.000000,0.102233,0.875013,0.022754,0.000000,0.000000,0.000000,0.000000
BBB,0.000000,0.000000,0.042594,0.870855,0.000000,0.083550,0.003000,0.000000
BB,0.000000,0.000000,0.000000,0.000000,0.733252,0.120037,0.013337,0.133374
B,0.000000,0.000000,0.000000,0.000000,0.000000,0.740280,0.130638,0.129082
CCC,0.000000,0.000000,0.001000,0.002000,0.003000,0.020000,0.651295,0.322705
D,0.000000,0.000000,0.000000,0.000000,0.000000,0.000000,0.000000,1.000000