Stining or Staining: How To spell?

The word Stining is misspelled against Staining, which is present continuous of "Stain"

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