Cheirmen or Chairmen: How To spell?

The word Cheirmen is misspelled against Chairmen, which is plural of "Chairman"

Word contains consecutive vowels 'AI' in between alphabets ch & rmen is misspelled as 'EI'
Wrong Spelling:  ch-ei-rmen 
Correct Spelling:  ch-ai-rmen 
Find more wrongly spelled words of Chairmen to spell it well.

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