Traveoled or Travailed: How To spell?

The word Traveoled is misspelled against Travailed, which is past tense of "Travail"

Word contains consecutive vowels 'AI' in between alphabets trav & led is misspelled as 'EO'
Wrong Spelling:  trav-eo-led 
Correct Spelling:  trav-ai-led 
Find more incorrect spellings of Travailed to spell right way.

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