Troner or Trainer: How To spell?

The word Troner is misspelled against Trainer, a noun meaning "A militiaman when called out for exercise or discipline."

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

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