The word Quarelling is misspelled against Quarrelling, which is present continuous of "Quarrel"
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Quarrelling has double "rr" is mispronounced as "r"
Remember double 'RR' in between the strings qua & elling which should not be misspelled with single 'R'
Wrong Spelling:  qua-r-elling 
Correct Spelling:  qua-rr-elling 
Check more misspelled words of Quarrelling to spell it correct.