15-Letter Words Matching ___P_____O_____

There are 12 15-letter words that match ___P_____O_____. 2 are common words, such as PREPOSITIONALLY and REAPPORTIONMENT. A rarer one is SYMPTOMATOLOGIC. In this set, I is the most frequent open letter (11 words). 7 words contain a doubled letter.

Full list 12

prepositionallyreapportionmentcomputationallycompunctionlessinspirationallylymphadenopathycompositionallycooperationistslymphangiogramslymphocytosisesnonphilosopherssymptomatologic

About this list

Words
12 (2 common words)
Common example
prepositionally
Rare example
symptomatologic
Doubled letters
7
Ending in S
5
Most frequent letter
I (11)

Questions

How many 15-letter words matching ___p_____o_____ are there?

12. 2 of them are common words.

What is a common example?

PREPOSITIONALLY is among the common words in this set.