Retaning or Retaining: How To spell?

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

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

You might be interested to know

Sapucaa or Sapucaia?

Stanzac or Stanzaic?

Swanmote or Swainmote?