Cofined or Coffined: How To spell?

The word Cofined is misspelled against Coffined, which is past tense of "Coffin"

Coffined has double "ff" is mispronounced as "f"
Remember double 'FF' in between the strings Co & ined which should not be misspelled with single 'F'
Wrong Spelling: Co-f-ined
Correct Spelling: Co-ff-ined
Find more incorrect spellings of Coffined to spell right way.