12-Letter Words Matching ______A_O___

There are 21 12-letter words that match ______A_O___. 2 are common words, such as FORESHADOWED and OVERSHADOWED. A rarer one is STONEMASONRY. In this set, R is the most frequent open letter (15 words). 3 words contain a doubled letter.

Full list 21

foreshadowedovershadowedarchdeaconrybastinadoingdeuteranopiaforeshadowergalactagoguelollapaloosalollapaloozamaquiladoraspostseasonalsarcomatosisbarricadoingcarbonadoingdeuteranopesdeuteranopicmiscatalogedoverenamoredsarcomatosessecretagoguestonemasonry

About this list

Words
21 (2 common words)
Common example
foreshadowed
Rare example
stonemasonry
Doubled letters
3
Ending in S
4
Most frequent letter
R (15)

Questions

How many 12-letter words matching ______a_o___ are there?

21. 2 of them are common words.

What is a common example?

FORESHADOWED is among the common words in this set.