Voler or Vailer: How To spell?

The word Voler is misspelled against Vailer, a noun meaning "One who vails."

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

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