,AAA,AA,A,BBB,BB,B,CCC,D
AAA,1.000000,0.000000,0.000000,0.000000,0.000000,0.000000,0.000000,0.000000
AA,0.027063,0.961034,0.011903,0.000000,0.000000,0.000000,0.000000,0.000000
A,0.000000,0.080727,0.901305,0.017968,0.000000,0.000000,0.000000,0.000000
BBB,0.000000,0.000000,0.113735,0.883270,0.000000,0.000000,0.002996,0.000000
BB,0.000000,0.000000,0.000000,0.174718,0.805287,0.015011,0.004985,0.000000
B,0.000000,0.000000,0.000000,0.000000,0.000000,0.737199,0.130094,0.132708
CCC,0.000000,0.000000,0.001000,0.002000,0.003000,0.020000,0.650564,0.323436
D,0.000000,0.000000,0.000000,0.000000,0.000000,0.000000,0.000000,1.000000