Welldreined or Welldrained: How To spell?

The word Welldreined is misspelled against Welldrained, which is past tense of "Welldrain"

Word contains consecutive vowels 'AI' in between alphabets welldr & ned is misspelled as 'EI'
Wrong Spelling:  welldr-ei-ned 
Correct Spelling:  welldr-ai-ned 
Find more wrongly spelled words of Welldrained to spell it well.

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