Retianing or Retaining: How To spell?

The word Retianing is misspelled against Retaining, which is present continuous of "Retain"

Word contains consecutive vowels 'AI' in between alphabets ret & ning is misspelled as 'IA'
Wrong Spelling:  ret-ia-ning 
Correct Spelling:  ret-ai-ning 
Find more wrongly spelled words of Retaining to spell it well.

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