Uptren or Uptrain: How To spell?

The word Uptren is misspelled against Uptrain, a verb meaning "To train up; to educate."

Word contains consecutive vowels 'AI' in between alphabets uptr & n is misspelled as 'E'
Wrong Spelling:  uptr-e-n 
Correct Spelling:  uptr-ai-n 
Explore spell check of Uptrain to spell without errors.

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