10-Letter Words Matching ___KF_____

There are 13 10-letter words that match ___KF_____. 5 are common words, such as BACKFIELDS and BACKFIRING. A rarer one is SUCKFISHES. In this set, I is the most frequent open letter (12 words). 2 words contain a doubled letter.

Full list 13

backfieldsbackfiringcockfightsweakfishesworkforcesjackfruitsbackfilledbackfittedjackfishesmilkfishesmonkfishesrockfishessuckfishes

About this list

Words
13 (5 common words)
Common example
backfields
Rare example
suckfishes
Doubled letters
2
Ending in S
10
Most frequent letter
I (12)

Questions

How many 10-letter words matching ___kf_____ are there?

13. 5 of them are common words.

What is a common example?

BACKFIELDS is among the common words in this set.