13-Letter Words Matching ______H_L____

There are 21 13-letter words that match ______H_L____. 6 are common words, such as BRAINCHILDREN and GRANDCHILDREN. A rarer one is TRIUMPHALISTS. In this set, I is the most frequent open letter (17 words). 6 words contain a doubled letter.

Full list 21

brainchildrengrandchildrenofficeholderspolicyholderspolyethylenesunderwhelmingleptophyllousmelancholiacsnecrophiliacsnecrophilismsstenophylloustachyphylaxisaminophyllineanthophyllitecandleholderscoprophiliacsmicrophyllousstraightlacedsympatholytictriumphalismstriumphalists

About this list

Words
21 (6 common words)
Common example
brainchildren
Rare example
triumphalists
Doubled letters
6
Ending in S
14
Most frequent letter
I (17)

Questions

How many 13-letter words matching ______h_l____ are there?

21. 6 of them are common words.

What is a common example?

BRAINCHILDREN is among the common words in this set.