14-Letter Words Matching ____T_____O___

There are 19 14-letter words that match ____T_____O___. 3 are common words, such as CONSTITUTIONAL and CONSTRUCTIONAL. A rarer one is SUBSTITUTIONAL. In this set, S is the most frequent open letter (18 words). 7 words contain a doubled letter.

Full list 19

constitutionalconstructionalphantasmagoriacounterstrokeselectrodepositfrontierswomanfrontierswomenphantasmagoriccountereffortscounterreformscryptococcosescryptococcosiselectroosmoseselectroosmosiselectroosmoticnorethindronesplastoquinonesroentgenologicsubstitutional

About this list

Words
19 (3 common words)
Common example
constitutional
Rare example
substitutional
Doubled letters
7
Ending in S
9
Most frequent letter
S (18)

Questions

How many 14-letter words matching ____t_____o___ are there?

19. 3 of them are common words.

What is a common example?

CONSTITUTIONAL is among the common words in this set.