Trading or Treading: How To spell?

The word Trading is misspelled against Treading, which is present continuous of "Tread"

--> Treading has vowels 'ea' together mispronounced as 'a'
Word contains consecutive vowels 'EA' in between alphabets tr & ding is misspelled as 'A'
Wrong Spelling:  tr-a-ding 
Correct Spelling:  tr-ea-ding 
Find more wrongly spelled words of Treading to spell it well.

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