,AAA,AA,A,BBB,BB,B,D
AAA,1.000000,0.000000,0.000000,0.000000,0.000000,0.000000,0.000000
AA,0.000000,0.999259,0.000000,0.000000,0.000000,0.000000,0.000741
A,0.000000,0.073300,0.925132,0.000000,0.000000,0.000000,0.001568
BBB,0.000000,0.000000,0.049496,0.940632,0.000000,0.000000,0.009872
BB,0.000000,0.000000,0.000000,0.000000,0.977995,0.000000,0.022005
B,0.000000,0.000000,0.000000,0.000000,0.000000,0.800000,0.200000
D,0.000000,0.000000,0.000000,0.000000,0.000000,0.000000,1.000000