12-Letter Words Matching ____H_L_____

There are 60 12-letter words that match ____H_L_____. 18 are common words, such as ANNIHILATING and ANNIHILATION. A rarer one is TROTHPLIGHTS. In this set, I is the most frequent open letter (54 words). 16 words contain a doubled letter.

Full list 60

Common words

annihilatingannihilationannihilatorsgraphologiesgraphologistknightlinesslandholdingsmorphologiesnonchalancesnonchalantlypitchblendesprophylactic
annihilatingannihilationannihilatorsgraphologiesgraphologistknightlinesslandholdingsmorphologiesnonchalancesnonchalantlypitchblendesprophylacticpsychologiespsychologistreupholstersweightlesslyweightlifterwithholdingsalcoholicityalcoholizingantihalationconchologiesepithalamionepithalamiumepitheliomashospholipaselyophilizingmarshalshipsmorphologistophthalmitisphilhellenesprothalamionprothalamiumpsephologiespsephologistpsychologismpsychologizepyrrhuloxiastrochelminthanaphylacticannihilatoryapophyllitesconchologistepithelizinghandholdingslyophilisinglyophilizersmorphallaxesmorphallaxisnympholepticphilhellenicprothallusespsychologiseroadholdingsstaphylinidstrichologiestrichologisttrophallaxestrophallaxistrothplights

About this list

Words
60 (18 common words)
Common example
annihilating
Rare example
trothplights
Doubled letters
16
Ending in S
29
Most frequent letter
I (54)

Questions

How many 12-letter words matching ____h_l_____ are there?

60. 18 of them are common words.

What is a common example?

ANNIHILATING is among the common words in this set.