,AAA,AA,A,BBB,BB,B,D
AAA,0.999480,0.000000,0.000000,0.000000,0.000000,0.000000,0.000520
AA,0.009649,0.989604,0.000000,0.000000,0.000000,0.000000,0.000748
A,0.000000,0.104282,0.874984,0.019158,0.000000,0.000000,0.001576
BBB,0.000000,0.000000,0.067420,0.847866,0.000000,0.072487,0.012228
BB,0.000000,0.000000,0.000000,0.000000,0.672167,0.183389,0.144445
B,0.000000,0.000000,0.000000,0.000000,0.000000,0.868943,0.131057
D,0.000000,0.000000,0.000000,0.000000,0.000000,0.000000,1.000000