The word Caroling is misspelled against Carolling, which is present continuous of "Carol"
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Carolling has double "ll" is mispronounced as "l"
Remember double 'LL' in between the strings caro & ing which should not be misspelled with single 'L'
Wrong Spelling:  caro-l-ing 
Correct Spelling:  caro-ll-ing 
Find more incorrect spellings of Carolling to spell right way.