11-Letter Words Matching _____L_F___

There are 13 11-letter words that match _____L_F___. 4 are common words, such as EXEMPLIFIED and EXEMPLIFIES. A rarer one is UNAMPLIFIED. In this set, I is the most frequent open letter (13 words). 4 words contain a doubled letter.

Full list 13

exemplifiedexemplifiesthimblefulsunqualifiedexemplifierlamelliformbuffalofishpatelliformpolyolefinsrequalifiedrequalifiesumbellifersunamplified

About this list

Words
13 (4 common words)
Common example
exemplified
Rare example
unamplified
Doubled letters
4
Ending in S
5
Most frequent letter
I (13)

Questions

How many 11-letter words matching _____l_f___ are there?

13. 4 of them are common words.

What is a common example?

EXEMPLIFIED is among the common words in this set.