$ python3 3square.py 

 --- Welcome to 3square! --- 

------------------------------
  | |   1. cold cube
  | |   2. felis silvestris
  | |   3. greek h


q123> 1
1: dog
------------------------------
 D|O|G  1. cold cube
  | |   2. felis silvestris
  | |   3. greek h


q123> 2
2: 123
Please enter a 3-letter word...
2: quit
Please enter a 3-letter word...
2: hat
------------------------------
 D|O|G  1. cold cube
 H|A|T  2. felis silvestris
  | |   3. greek h


q123> q
------------------------------
 I|C|E  1. cold cube
 C|A|T  2. felis silvestris
 E|T|A  3. greek h