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