Stined or Stained: How To spell?

The word Stined is misspelled against Stained, which is past tense of "Stain"

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

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