Impening or Impenning: How To spell?

The word Impening is misspelled against Impenning, which is present continuous of "Impen"

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