Twiling or Twilling: How To spell?
The word Twiling is misspelled against Twilling, which is present continuous of "Twill"
Twilling has double "ll" is mispronounced as "l"Remember double 'LL' in between the strings twi & ing which should not be misspelled with single 'L'
Wrong Spelling:  twi-l-ing  Correct Spelling:  twi-ll-ing 
Find more wrongly spelled words of Twilling to spell it well.