Tron or Train: How To spell?

The word Tron is misspelled against Train, a verb meaning "To be drilled in military exercises; to do duty in a military company."

Word contains consecutive vowels 'AI' in between alphabets tr & n is misspelled as 'O'
Wrong Spelling:  tr-o-n 
Correct Spelling:  tr-ai-n 
Find more incorrect spellings of Train to spell right way.

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