The word Cufing is misspelled against Cuffing, which is present continuous of "Cuff"
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Cuffing has double "ff" is mispronounced as "f"
Remember double 'FF' in between the strings Cu & ing which should not be misspelled with single 'F'
Wrong Spelling: Cu-f-ing
Correct Spelling: Cu-ff-ing
Check more misspelled words of Cuffing to spell it correct.