What do the following letter strings have in common?

1. EDO

2. ERAN

3. VICT

4. TOR

5. ATIC

6. EREE

 

Answer:

 

They can follow three-letter words such that the three-letter word is the informal form of the longer word:

 

1. TUXedo

2. VETeran

3. CONvict

4. DOCtor

5. FANatic

6. REFeree

 

Credit: 

GAMES Magazine

May, 1989

Stephen Sniderman