,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,0.000000,0.444444,0.444444,0.111111,0.000000,0.000000,0.000000,0.000000
A,0.000000,0.000000,0.636374,0.363626,0.000000,0.000000,0.000000,0.000000
BBB,0.000000,0.000000,0.052632,0.787974,0.105263,0.051132,0.003000,0.000000
BB,0.000000,0.000000,0.000000,0.107188,0.464290,0.257113,0.028568,0.142841
B,0.000000,0.000000,0.000000,0.000000,0.000000,0.425000,0.075000,0.500000
CCC,0.000000,0.000000,0.001000,0.002000,0.003000,0.020000,0.224000,0.750000
D,0.000000,0.000000,0.000000,0.000000,0.000000,0.000000,0.000000,1.000000