9-Letter Words Matching ____MY___

There are 13 9-letter words that match ____MY___. 2 are common words, such as CHLAMYDIA and SHIMMYING. A rarer one is SHAMMYING. In this set, I is the most frequent open letter (10 words). 3 words contain a doubled letter.

Full list 13

chlamydiashimmyingpolymyxinantimycinchammyingchlamydeschlamyseskanamycinmitomycinparamylumperimysiapuromycinshammying

About this list

Words
13 (2 common words)
Common example
chlamydia
Rare example
shammying
Doubled letters
3
Ending in S
2
Most frequent letter
I (10)

Questions

How many 9-letter words matching ____my___ are there?

13. 2 of them are common words.

What is a common example?

CHLAMYDIA is among the common words in this set.