The word Swabing is misspelled against Swabbing, which is present continuous of "Swab"
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Swabbing has double "bb" is mispronounced as "b"
Remember double 'BB' in between the strings Swa & ing which should not be misspelled with single 'B'
Wrong Spelling:  Swa-b-ing 
Correct Spelling:  Swa-bb-ing 
Find more wrongly spelled words of Swabbing to spell it well.