Qualing or Qualling: How To spell?

The word Qualing is misspelled against Qualling, which is present continuous of "Quail"

Qualling has double "ll" is mispronounced as "l"
Remember double 'LL' in between the strings qua & ing which should not be misspelled with single 'L'
Wrong Spelling:  qua-l-ing 
Correct Spelling:  qua-ll-ing 
Check more misspelled words of Qualling to spell it correct.