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