13-Letter Words Matching _____L____R__

There are 14 13-letter words that match _____L____R__. 2 are common words, such as PARALLELOGRAM and SHUFFLEBOARDS. A rarer one is POIKILOTHERMS. In this set, E is the most frequent open letter (14 words). 4 words contain a doubled letter.

Full list 14

parallelogramshuffleboardscephalothoraxinterlocutrixrectilinearlyantipleasuresbiotelemetriccephalometriccephalosporininterlinearlymillilambertsnephelometricpamphleteeredpoikilotherms

About this list

Words
14 (2 common words)
Common example
parallelogram
Rare example
poikilotherms
Doubled letters
4
Ending in S
4
Most frequent letter
E (14)

Questions

How many 13-letter words matching _____l____r__ are there?

14. 2 of them are common words.

What is a common example?

PARALLELOGRAM is among the common words in this set.