Difered or Differed: How To spell?

The word Difered is misspelled against Differed, which is past tense of "Differ"

Differed has double "ff" is mispronounced as "f"
Remember double 'FF' in between the strings Di & ered which should not be misspelled with single 'F'
Wrong Spelling:  Di-f-ered 
Correct Spelling:  Di-ff-ered 
Find more wrongly spelled words of Differed to spell it well.

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