The word Interexes is misspelled against Interrexes, which is plural of "Interrex"
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Interrexes has double "rr" is mispronounced as "r"
Remember double 'RR' in between the strings inte & exes which should not be misspelled with single 'R'
Wrong Spelling:  inte-r-exes 
Correct Spelling:  inte-rr-exes 
Explore spell check of Interrexes to spell without errors.