The word Prexisted is misspelled against Preexisted, which is past tense of "Preexist"
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Preexisted has double "ee" is mispronounced as "e"
Remember double 'EE' in between the strings Pr & xisted which should not be misspelled with single 'E'
Wrong Spelling: Pr-e-xisted
Correct Spelling: Pr-ee-xisted
Find more wrongly spelled words of Preexisted to spell it well.