The word Mastifs is misspelled against Mastiffs, which is plural of "Mastiff"
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Mastiffs has double "ff" is mispronounced as "f"
Remember double 'FF' in between the strings Masti & s which should not be misspelled with single 'F'
Wrong Spelling: Masti-f-s
Correct Spelling: Masti-ff-s
Find more wrongly spelled words of Mastiffs to spell it well.