Difering or Differing: How To spell?

The word Difering is misspelled against Differing, which is present continuous of "Differ"

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