Complaoned or Complained: How To spell?

The word Complaoned is misspelled against Complained, which is past tense of "Complain"

Word contains consecutive vowels 'AI' in between alphabets compl & ned is misspelled as 'AO'
Wrong Spelling:  compl-ao-ned 
Correct Spelling:  compl-ai-ned 
Find more incorrect spellings of Complained to spell right way.

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