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