The word Scrubing is misspelled against Scrubbing, which is present continuous of "Scrub"
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Scrubbing has double "bb" is mispronounced as "b"
Remember double 'BB' in between the strings Scru & ing which should not be misspelled with single 'B'
Wrong Spelling:  Scru-b-ing 
Correct Spelling:  Scru-bb-ing 
Check more misspelled words of Scrubbing to spell it correct.