15-Letter Words Matching ____R__H_______

There are 12 15-letter words that match ____R__H_______. 1 are common words, such as INTERSCHOLASTIC and ALGORITHMICALLY. A rarer one is INTERBEHAVIORAL. In this set, I is the most frequent open letter (12 words). 4 words contain a doubled letter.

Full list 12

interscholasticalgorithmicallychlorothiazidesheterochromaticheterochromatinimperishabilitylogarithmicallyneoarsphenaminedownrightnessesexoerythrocyticheterothallismsinterbehavioral

About this list

Words
12 (1 common words)
Common example
interscholastic
Rare example
interbehavioral
Doubled letters
4
Ending in S
3
Most frequent letter
I (12)

Questions

How many 15-letter words matching ____r__h_______ are there?

12. 1 of them are common words.

What is a common example?

INTERSCHOLASTIC is among the common words in this set.