12-Letter Words Matching ________M_R_

There are 13 12-letter words that match ________M_R_. 2 are common words, such as BARNSTORMERS and TRANSFORMERS. A rarer one is NONCUSTOMERS. In this set, E is the most frequent open letter (13 words). 4 words contain a doubled letter.

Full list 13

barnstormerstransformersdeutschemarkflimflammerywisenheimersbenchwarmersflimflammershomopolymersmicrofilmersmonogrammersninnyhammersnonconsumersnoncustomers

About this list

Words
13 (2 common words)
Common example
barnstormers
Rare example
noncustomers
Doubled letters
4
Ending in S
11
Most frequent letter
E (13)

Questions

How many 12-letter words matching ________m_r_ are there?

13. 2 of them are common words.

What is a common example?

BARNSTORMERS is among the common words in this set.