The word Occured is misspelled against Occurred, which is past tense of "Occur"
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Occurred has double "rr" is mispronounced as "r"
Remember double 'RR' in between the strings occu & ed which should not be misspelled with single 'R'
Wrong Spelling: occu-r-ed
Correct Spelling: occu-rr-ed
Check more misspelled words of Occurred to spell it correct.