Cufing or Cuffing: How To spell?

The word Cufing is misspelled against Cuffing, which is present continuous of "Cuff"

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.