6-Letter Words Matching ___A_N

There are 21 6-letter words that match ___A_N. 11 are common words, such as ATTAIN and COCAIN. A rarer one is UNSAWN. In this set, I is the most frequent open letter (15 words). 2 words contain a doubled letter.

Full list 21

attaincocaindetaindomainobtainordainregainremainretainsprainstrainfusainpapainthrawnatwainbedamncedarnimpawnreearnresawnunsawn

About this list

Words
21 (11 common words)
Common example
attain
Rare example
unsawn
Doubled letters
2
Ending in S
0
Most frequent letter
I (15)

Questions

How many 6-letter words matching ___a_n are there?

21. 11 of them are common words.

What is a common example?

ATTAIN is among the common words in this set.