Sleving or Sleeving: How To spell?
The word Sleving is misspelled against Sleeving, which is present continuous of "Sleeve"
Sleeving has double "ee" is mispronounced as "e"Remember double 'EE' in between the strings Sl & ving which should not be misspelled with single 'E'
Wrong Spelling:  Sl-e-ving  Correct Spelling:  Sl-ee-ving 
Find more wrongly spelled words of Sleeving to spell it well.