Retreted or Retreated: How To spell?

The word Retreted is misspelled against Retreated, which is past tense of "Retreat"

--> Retreated has vowels 'ea' together mispronounced as 'e'
Word contains consecutive vowels 'EA' in between alphabets retr & ted is misspelled as 'E'
Wrong Spelling:  retr-e-ted 
Correct Spelling:  retr-ea-ted 
Explore spell check of Retreated to spell without errors.

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