Betriming or Betrimming: How To spell?

The word Betriming is misspelled against Betrimming, which is present continuous of "Betrim"

Betrimming has double "mm" is mispronounced as "m"
Remember double 'MM' in between the strings betri & ing which should not be misspelled with single 'M'
Wrong Spelling: betri-m-ing
Correct Spelling: betri-mm-ing
Find more wrongly spelled words of Betrimming to spell it well.