Mezotintoed or Mezzotintoed: How To spell?

The word Mezotintoed is misspelled against Mezzotintoed, which is past tense of "Mezzotinto"

Mezzotintoed has double "zz" is mispronounced as "z"
Remember double 'ZZ' in between the strings me & otintoed which should not be misspelled with single 'Z'
Wrong Spelling:  me-z-otintoed 
Correct Spelling:  me-zz-otintoed 
Find more incorrect spellings of Mezzotintoed to spell right way.

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