,AAA,AA,A,BBB,BB,B,D
AAA,1.000000,0.000000,0.000000,0.000000,0.000000,0.000000,0.000000
AA,0.000000,0.989709,0.009574,0.000000,0.000000,0.000000,0.000717
A,0.000000,0.044609,0.884037,0.062474,0.000000,0.000000,0.008880
BBB,0.000000,0.000000,0.025686,0.871679,0.076949,0.000000,0.025686
BB,0.000000,0.000000,0.000000,0.000000,0.800030,0.000000,0.199970
B,0.000000,0.000000,0.000000,0.000000,0.000000,0.749965,0.250035
D,0.000000,0.000000,0.000000,0.000000,0.000000,0.000000,1.000000