The word Ocur is misspelled against Occur, a verb meaning "To go in order to meet; to make reply."
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Occur has double "cc" is mispronounced as "c"
Remember double 'CC' in between the strings O & ur which should not be misspelled with single 'C'
Wrong Spelling:  O-c-ur 
Correct Spelling:  O-cc-ur 
Check more misspelled words of Occur to spell it correct.