Abstined or Abstained: How To spell?

The word Abstined is misspelled against Abstained, which is past tense of "Abstain"

Word contains consecutive vowels 'AI' in between alphabets abst & ned is misspelled as 'I'
Wrong Spelling:  abst-i-ned 
Correct Spelling:  abst-ai-ned 
Find more wrongly spelled words of Abstained to spell it well.

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