Input file: in02
Name 1: Brian
Name 2: Shane
Friends in common:
Taylor
Input file: in04
Name 1: Rebecca
Name 2: William
Friends in common:
Lindsey
Input file: in10
Name 1: William
Name 2: Abigail
Friends in common:
Patrick
Ethan
Input file: in25
Name 1: Ian
Name 2: Peter