14-Letter Words Matching _____MM_______

There are 12 14-letter words that match _____MM_______. 4 are common words, such as AUTOIMMUNITIES and INFLAMMABILITY. A rarer one is SUBCOMMUNITIES. In this set, I is the most frequent open letter (12 words). 12 words contain a doubled letter.

Full list 12

autoimmunitiesinflammabilitynoncommercialsnoncommittallyaxisymmetricalinflammatorilynoncommitmentsnoncommunitiesnoncommutativenonsymmetricalsubcommissionssubcommunities

About this list

Words
12 (4 common words)
Common example
autoimmunities
Rare example
subcommunities
Doubled letters
12
Ending in S
6
Most frequent letter
I (12)

Questions

How many 14-letter words matching _____mm_______ are there?

12. 4 of them are common words.

What is a common example?

AUTOIMMUNITIES is among the common words in this set.