NPR Weekend Edition Sunday Puzzle
October 9, 2016
Will Shortz

Each of the words below can be changed into a new one by making the same change. What is the change and what are the new words?

PECAN
SUPPER
REGION
MANGER
OBVIOUS
DEMOTION
ALTERATION

HINT:
The change involves the same two letters.

Answers:

The letters LI can be inserted somewhere into each word to make a new one:

PELICAN
SUPPLIER
RELIGION
MALINGER
OBLIVIOUS
DEMOLITION
ALLITERATION