,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,0.000000,0.996806,0.003194,0.000000,0.000000,0.000000,0.000000,0.000000
A,0.000000,0.045306,0.891376,0.057383,0.000000,0.000000,0.000000,0.005935
BBB,0.000000,0.000000,0.044172,0.854883,0.078990,0.000000,0.002996,0.018959
BB,0.000000,0.000000,0.000000,0.000000,0.882739,0.042857,0.008079,0.066325
B,0.000000,0.000000,0.000000,0.000000,0.000000,0.527309,0.093055,0.379636
CCC,0.000000,0.000000,0.001000,0.002000,0.003000,0.020000,0.371213,0.602787
D,0.000000,0.000000,0.000000,0.000000,0.000000,0.000000,0.000000,1.000000