
Create a combinational circuit that implements the truth table.

  x3 | x2 | x1 | f
  0  | 0  | 0  | 0
  0  | 0  | 1  | 0
  0  | 1  | 0  | 1
  0  | 1  | 1  | 1
  1  | 0  | 0  | 0
  1  | 0  | 1  | 1
  1  | 1  | 0  | 0
  1  | 1  | 1  | 1

module TopModule (
  input x3,
  input x2,
  input x1,
  output f
);

