Ston or Stain: How To spell?

The word Ston is misspelled against Stain, a noun meaning "A discoloration by foreign matter; a spot; as, a stain on a garment or cloth."

Word contains consecutive vowels 'AI' in between alphabets st & n is misspelled as 'O'
Wrong Spelling:  st-o-n 
Correct Spelling:  st-ai-n 
Find more incorrect spellings of Stain to spell right way.

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