9-Letter Words Matching ______A_N

There are 33 9-letter words that match ______A_N. 18 are common words, such as APPERTAIN and ASCERTAIN. A rarer one is WIREDRAWN. In this set, I is the most frequent open letter (29 words). 3 words contain a doubled letter.

Full list 33

Common words

appertainascertainbirdbrainboatswainchieftainchilblainconstrainentertaineyestraingrosgrainlamebrainoverdrawn
appertainascertainbirdbrainboatswainchieftainchilblainconstrainentertaineyestraingrosgrainlamebrainoverdrawnporcelainpreordainreexplainuncertainunderlainwithdrawnbalmacaancockswainforebrainfrogspawnhindbrainoverlearnovertrainpeneplainsubdomainbromelainchatelaincocaptainsuperlaintearstainwiredrawn

About this list

Words
33 (18 common words)
Common example
appertain
Rare example
wiredrawn
Doubled letters
3
Ending in S
0
Most frequent letter
I (29)

Questions

How many 9-letter words matching ______a_n are there?

33. 18 of them are common words.

What is a common example?

APPERTAIN is among the common words in this set.