,AAA,AA,A,BBB,BB,B,D
AAA,0.999822,0.000000,0.000000,0.000000,0.000000,0.000000,0.000178
AA,0.076293,0.851519,0.071357,0.000000,0.000000,0.000000,0.000831
A,0.000000,0.114693,0.870532,0.013056,0.000000,0.000000,0.001719
BBB,0.000000,0.000000,0.047149,0.902183,0.037742,0.000000,0.012925
BB,0.000000,0.000000,0.000000,0.094675,0.725113,0.132275,0.047937
B,0.000000,0.000000,0.000000,0.000000,0.080869,0.705528,0.213603
D,0.000000,0.000000,0.000000,0.000000,0.000000,0.000000,1.000000