The word Guling is misspelled against Gulling, which is present continuous of "Gull"
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Gulling has double "ll" is mispronounced as "l"
Remember double 'LL' in between the strings gu & ing which should not be misspelled with single 'L'
Wrong Spelling:  gu-l-ing 
Correct Spelling:  gu-ll-ing 
Check more misspelled words of Gulling to spell it correct.