Appertoned or Appertained: How To spell?

The word Appertoned is misspelled against Appertained, which is past tense of "Appertain"

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

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