Trepaning or Trepanning: How To spell?

The word Trepaning is misspelled against Trepanning, which is present continuous of "Trepan"

Trepanning has double "nn" is mispronounced as "n"
Remember double 'NN' in between the strings trepa & ing which should not be misspelled with single 'N'
Wrong Spelling: trepa-n-ing
Correct Spelling: trepa-nn-ing
Find more wrongly spelled words of Trepanning to spell it well.