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