Tretise or Treatise: How To spell?

The word Tretise is misspelled against Treatise, meaning "An elaborate literary composition presenting a subject in all its parts."

Treatise has vowels 'ea' together mispronounced as 'e'
Word contains consecutive vowels 'EA' in between alphabets tr & tise is misspelled as 'E'
Wrong Spelling:  tr-e-tise 
Correct Spelling:  tr-ea-tise 
Find more wrongly spelled words of Treatise to spell it well.

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