The word Tarifing is misspelled against Tariffing, which is present continuous of "Tariff"
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Tariffing has double "ff" is mispronounced as "f"
Remember double 'FF' in between the strings Tari & ing which should not be misspelled with single 'F'
Wrong Spelling: Tari-f-ing
Correct Spelling: Tari-ff-ing
Find more wrongly spelled words of Tariffing to spell it well.