Trepaned or Trepanned: How To spell?

The word Trepaned is misspelled against Trepanned, which is past tense of "Trepan"

Trepanned has double "nn" is mispronounced as "n"
Remember double 'NN' in between the strings trepa & ed which should not be misspelled with single 'N'
Wrong Spelling: trepa-n-ed
Correct Spelling: trepa-nn-ed
Explore spell check of Trepanned to spell without errors.