10-Letter Words Matching ______E__O

There are 12 10-letter words that match ______E__O. 3 are common words, such as ALLEGRETTO and DIMINUENDO. A rarer one is FIANCHETTO. In this set, T is the most frequent open letter (10 words). 7 words contain a doubled letter.

Full list 12

allegrettodiminuendointermezzocamerlengoeighteenmopentimentoportamentoritornellosaltarellostringendoswitcheroofianchetto

About this list

Words
12 (3 common words)
Common example
allegretto
Rare example
fianchetto
Doubled letters
7
Ending in S
0
Most frequent letter
T (10)

Questions

How many 10-letter words matching ______e__o are there?

12. 3 of them are common words.

What is a common example?

ALLEGRETTO is among the common words in this set.