12-Letter Words Matching ____I___O___

There are 33 12-letter words that match ____I___O___. 17 are common words, such as COMMISSIONED and COMMISSIONER. A rarer one is UREDIOSPORES. In this set, N is the most frequent open letter (24 words). 11 words contain a doubled letter.

Full list 33

Common words

commissionedcommissionerherringboneslatticeworksmeetinghousemillisecondsmisdiagnosedmisdiagnosesmisdiagnosismulticolorednonfictionalpackinghouse
commissionedcommissionerherringboneslatticeworksmeetinghousemillisecondsmisdiagnosedmisdiagnosesmisdiagnosismulticolorednonfictionalpackinghouseprofiterolesservicewomanservicewomenworkingwomanworkingwomenbastinadoingcyprinodontsepidiascopesmaquiladorasparticoloredphysiognomicseptillionthsextillionthunneighborlyamphictyonicbarricadoingchemiosmoticherringbonedplagiotropicspeciationalurediospores

About this list

Words
33 (17 common words)
Common example
commissioned
Rare example
urediospores
Doubled letters
11
Ending in S
10
Most frequent letter
N (24)

Questions

How many 12-letter words matching ____i___o___ are there?

33. 17 of them are common words.

What is a common example?

COMMISSIONED is among the common words in this set.