,AAA,AA,A,BBB,BB,B,D
AAA,0.999485,0.000000,0.000000,0.000000,0.000000,0.000000,0.000515
AA,0.076879,0.896739,0.025589,0.000000,0.000000,0.000000,0.000793
A,0.000000,0.036999,0.942560,0.018499,0.000000,0.000000,0.001943
BBB,0.000000,0.000000,0.156948,0.821083,0.012114,0.000000,0.009855
BB,0.000000,0.000000,0.000000,0.000000,0.693633,0.277381,0.028986
B,0.000000,0.000000,0.000000,0.000000,0.000000,0.944135,0.055865
D,0.000000,0.000000,0.000000,0.000000,0.000000,0.000000,1.000000