,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,0.076355,0.852232,0.071413,0.000000,0.000000,0.000000,0.000000,0.000000
A,0.000000,0.114891,0.872030,0.013079,0.000000,0.000000,0.000000,0.000000
BBB,0.000000,0.000000,0.047703,0.911130,0.038171,0.000000,0.002996,0.000000
BB,0.000000,0.000000,0.000000,0.094675,0.725113,0.119048,0.013228,0.047937
B,0.000000,0.000000,0.000000,0.000000,0.080869,0.599699,0.105829,0.213603
CCC,0.000000,0.000000,0.001000,0.002000,0.003000,0.071361,0.374766,0.547872
D,0.000000,0.000000,0.000000,0.000000,0.000000,0.000000,0.000000,1.000000