Thraded or Threaded: How To spell?

The word Thraded is misspelled against Threaded, which is past tense of "Thread"

--> Threaded has vowels 'ea' together mispronounced as 'a'
Word contains consecutive vowels 'EA' in between alphabets thr & ded is misspelled as 'A'
Wrong Spelling:  thr-a-ded 
Correct Spelling:  thr-ea-ded 
Explore spell check of Threaded to spell without errors.

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