Houler or Hauler: How To spell?

The word Houler is misspelled against Hauler, a noun meaning "One who hauls."

Word contains consecutive vowels 'AU' in between alphabets h & ler is misspelled as 'OU'
Wrong Spelling:  h-ou-ler 
Correct Spelling:  h-au-ler 
Check more misspelled words of Hauler to spell it correct.

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