13-Letter Words Matching ____F_____N__

There are 12 13-letter words that match ____F_____N__. 4 are common words, such as BULLFIGHTINGS and COCKFIGHTINGS. A rarer one is TYPEFOUNDINGS. In this set, I is the most frequent open letter (11 words). 3 words contain a doubled letter.

Full list 12

bullfightingscockfightingsfirefightingsinsufficiencybirefringencemetafictionalantiforeignerdisaffirmancegyrofrequencymonofilamentsrarefactionaltypefoundings

About this list

Words
12 (4 common words)
Common example
bullfightings
Rare example
typefoundings
Doubled letters
3
Ending in S
5
Most frequent letter
I (11)

Questions

How many 13-letter words matching ____f_____n__ are there?

12. 4 of them are common words.

What is a common example?

BULLFIGHTINGS is among the common words in this set.