The word Perwiging is misspelled against Perwigging, which is present continuous of "Periwig"
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Perwigging has double "gg" is mispronounced as "g"
Remember double 'GG' in between the strings perwi & ing which should not be misspelled with single 'G'
Wrong Spelling:  perwi-g-ing 
Correct Spelling:  perwi-gg-ing 
Find more wrongly spelled words of Perwigging to spell it well.