F(D,C,B,A) = E(1, 3, 4, 5, 6, 7, 10, 12, 14)

    D C B A   f
 0  0 0 0 0   0
 1  0 0 0 1   1
 2  0 0 1 0   0
 3  0 0 1 1   1
 4  0 1 0 0   1
 5  0 1 0 1   1
 6  0 1 1 0   1
 7  0 1 1 1   1
 8  1 0 0 0   0
 9  1 0 0 1   0
10  1 0 1 0   1
11  1 0 1 1   0
12  1 1 0 0   1
13  1 1 0 1   0
14  1 1 1 0   1
15  1 1 1 1   0

             DC    
        00 01 11 10
     00  0  1  1  0
BA   01  1  1  0  0
     11  1  1  0  0
     10  0  1  1  1