An Logic Problem (3.2)

        Dr. Abner Mallity has been working with a logic circuit.  He has a circuit that works but he suspects that it can be made simpler.  Here is the circuit.

Your Job:

        Your job is to do the following

W
X
Y
Z
F
0
0
0
0
 
0
0
0
1
 
0
0
1
0
 
0
0
1
1
 
0
1
0
0
 
0
1
0
1
 
0
1
1
0
 
0
1
1
1
 
1
0
0
0
 
1
0
0
1
 
1
0
1
0
 
1
0
1
1
 
1
1
0
0
 
1
1
0
1
 
1
1
1
0
 
1
1
1
1