,AAA,AA,A,BBB,BB,B,D
AAA,0.999490,0.000000,0.000000,0.000000,0.000000,0.000000,0.000510
AA,0.016599,0.982653,0.000000,0.000000,0.000000,0.000000,0.000747
A,0.000000,0.076025,0.915166,0.007150,0.000000,0.000000,0.001659
BBB,0.000000,0.000000,0.150027,0.739609,0.000000,0.097626,0.012738
BB,0.000000,0.000000,0.000000,0.087367,0.758454,0.037027,0.117152
B,0.000000,0.000000,0.000000,0.000000,0.042016,0.702267,0.255717
D,0.000000,0.000000,0.000000,0.000000,0.000000,0.000000,1.000000