Steyned or Stained: How To spell?

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

Word contains consecutive vowels 'AI' in between alphabets st & ned is misspelled as 'EY'
Wrong Spelling:  st-ey-ned 
Correct Spelling:  st-ai-ned 
Explore spell check of Stained to spell without errors.

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