The word Heling is misspelled against Heeling, which is present continuous of "Heel"
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Heeling has double "ee" is mispronounced as "e"
Remember double 'EE' in between the strings H & ling which should not be misspelled with single 'E'
Wrong Spelling:  H-e-ling 
Correct Spelling:  H-ee-ling 
Find more wrongly spelled words of Heeling to spell it well.