DFFMUX
        30_09   30_54
A       1       0
B       0       1

CFFMUX
        30_39   31_45
A       0       1
B       1       0

BFFMUX
        30_18   30_19
A       0       1
B       1       0

AFFMUX
        30_09   30_55
A       1       0
B       0       1

