13-Letter Words Matching _L__R________

There are 21 13-letter words that match _L__R________. 6 are common words, such as ALTERNATIVELY and CLAIRVOYANCES. A rarer one is FLUOROURACILS. In this set, I is the most frequent open letter (17 words). 2 words contain a doubled letter.

Full list 21

alternativelyclairvoyancesclearinghousefluorescencesfluoridationsfluorocarbonsallergenicityclairaudiencefluoroscopiesclairvoyantlyclearheadedlyelderlinessesflourishinglyfluorimetriesfluorinationsfluorochromesfluorographicfluorometriesfluoroscopingfluoroscopistfluorouracils

About this list

Words
21 (6 common words)
Common example
alternatively
Rare example
fluorouracils
Doubled letters
2
Ending in S
11
Most frequent letter
I (17)

Questions

How many 13-letter words matching _l__r________ are there?

21. 6 of them are common words.

What is a common example?

ALTERNATIVELY is among the common words in this set.