Ataining or Attaining: How To spell?

The word Ataining is misspelled against Attaining, which is present continuous of "Attain"

Attaining has double "tt" is mispronounced as "t"
Remember double 'TT' in between the strings a & aining which should not be misspelled with single 'T'
Wrong Spelling:  a-t-aining 
Correct Spelling:  a-tt-aining 
Find more wrongly spelled words of Attaining to spell it well.

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