The word Interegnums is misspelled against Interregnums, which is plural of "Interregnum"
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Interregnums has double "rr" is mispronounced as "r"
Remember double 'RR' in between the strings inte & egnums which should not be misspelled with single 'R'
Wrong Spelling: inte-r-egnums
Correct Spelling: inte-rr-egnums
Check more misspelled words of Interregnums to spell it correct.