The word Leveling is misspelled against Levelling, which is present continuous of "Level"
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Levelling has double "ll" is mispronounced as "l"
Remember double 'LL' in between the strings leve & ing which should not be misspelled with single 'L'
Wrong Spelling: leve-l-ing
Correct Spelling: leve-ll-ing
Find more wrongly spelled words of Levelling to spell it well.