Ascertauned or Ascertained: How To spell?

The word Ascertauned is misspelled against Ascertained, which is past tense of "Ascertain"

Word contains consecutive vowels 'AI' in between alphabets ascert & ned is misspelled as 'AU'
Wrong Spelling:  ascert-au-ned 
Correct Spelling:  ascert-ai-ned 
Check more misspelled words of Ascertained to spell it correct.

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