The word Atweyn is misspelled against Atwain, an adverb meaning "In twain; asunder."
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Word contains consecutive vowels 'AI' in between alphabets atw & n is misspelled as 'EY'
Wrong Spelling:  atw-ey-n 
Correct Spelling:  atw-ai-n 
Explore spell check of Atwain to spell without errors.