
Implement the circuit described by the Karnaugh map below.

              ab
   cd   00  01  11  10
   00 | 1 | 1 | 0 | 1 |
   01 | 1 | 0 | 0 | 1 |
   11 | 0 | 1 | 1 | 1 |
   10 | 1 | 1 | 0 | 0 |

module TopModule (
  input a,
  input b,
  input c,
  input d,
  output out
);

