,AAA,AA,A,BBB,BB,B,D
AAA,0.999475,0.000000,0.000000,0.000000,0.000000,0.000000,0.000525
AA,0.014076,0.978215,0.006987,0.000000,0.000000,0.000000,0.000723
A,0.000000,0.000000,0.989112,0.009130,0.000000,0.000000,0.001758
BBB,0.000000,0.000000,0.000000,0.957404,0.031940,0.000000,0.010656
BB,0.000000,0.000000,0.000000,0.000000,0.928580,0.035710,0.035710
B,0.000000,0.000000,0.000000,0.000000,0.000000,0.941123,0.058877
D,0.000000,0.000000,0.000000,0.000000,0.000000,0.000000,1.000000