Cheyrmen or Chairmen: How To spell?

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

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

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