14-Letter Words Matching ____E_____O___

There are 12 14-letter words that match ____E_____O___. 2 are common words, such as AFOREMENTIONED and CONVERSATIONAL. A rarer one is NONSENSATIONAL. 1 words contain a doubled letter.

Full list 12

aforementionedconversationalconservationaldispensationaldissertationaloptoelectronicpresentationalprogestationalcompensationalcondensationalconversazionesnonsensational

About this list

Words
12 (2 common words)
Common example
aforementioned
Rare example
nonsensational
Doubled letters
1
Ending in S
1

Questions

How many 14-letter words matching ____e_____o___ are there?

12. 2 of them are common words.

What is a common example?

AFOREMENTIONED is among the common words in this set.