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