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.