,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,0.050023,0.949977,0.000000,0.000000,0.000000,0.000000,0.000000,0.000000
A,0.000000,0.134662,0.826882,0.038457,0.000000,0.000000,0.000000,0.000000
BBB,0.000000,0.000000,0.084410,0.898527,0.014068,0.000000,0.002996,0.000000
BB,0.000000,0.000000,0.000000,0.200000,0.450000,0.045000,0.005000,0.300000
B,0.000000,0.000000,0.000000,0.055556,0.000000,0.566667,0.100000,0.277778
CCC,0.000000,0.000000,0.001000,0.002000,0.003000,0.020000,0.374000,0.600000
D,0.000000,0.000000,0.000000,0.000000,0.000000,0.000000,0.000000,1.000000