,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,0.038518,0.961482,0.000000,0.000000,0.000000,0.000000,0.000000,0.000000
A,0.000000,0.125030,0.874970,0.000000,0.000000,0.000000,0.000000,0.000000
BBB,0.000000,0.000000,0.034400,0.911004,0.051601,0.000000,0.002996,0.000000
BB,0.000000,0.000000,0.000000,0.087637,0.719335,0.110539,0.012282,0.070207
B,0.000000,0.000000,0.000000,0.000000,0.117606,0.600028,0.105887,0.176479
CCC,0.000000,0.000000,0.001000,0.002000,0.003000,0.094084,0.456299,0.443617
D,0.000000,0.000000,0.000000,0.000000,0.000000,0.000000,0.000000,1.000000