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