,AAA,AA,A,BBB,BB,B,D
AAA,0.999445,0.000000,0.000000,0.000000,0.000000,0.000000,0.000555
AA,0.045436,0.953637,0.000000,0.000000,0.000000,0.000000,0.000927
A,0.000000,0.094130,0.866336,0.037724,0.000000,0.000000,0.001810
BBB,0.000000,0.000000,0.104804,0.885258,0.000000,0.000000,0.009938
BB,0.000000,0.000000,0.000000,0.147150,0.784840,0.049089,0.018920
B,0.000000,0.000000,0.000000,0.000000,0.000000,0.750000,0.250000
D,0.000000,0.000000,0.000000,0.000000,0.000000,0.000000,1.000000