13-Letter Words Matching ___F_R_______

There are 19 13-letter words that match ___F_R_______. 5 are common words, such as CONFIRMATIONS and CONFORMATIONS. A rarer one is TRIFURCATIONS. In this set, I is the most frequent open letter (16 words). 7 words contain a doubled letter.

Full list 19

confirmationsconformationsdifferentialsdifferentiatemalformationsdifferentnessuniformnessesconferencingsconfirmednessdisfurnishingnonforfeitureperformativespreferabilitypreformationspreformattingpreformulatedpreformulatessulfurousnesstrifurcations

About this list

Words
19 (5 common words)
Common example
confirmations
Rare example
trifurcations
Doubled letters
7
Ending in S
13
Most frequent letter
I (16)

Questions

How many 13-letter words matching ___f_r_______ are there?

19. 5 of them are common words.

What is a common example?

CONFIRMATIONS is among the common words in this set.