The word Knaping is misspelled against Knapping, which is present continuous of "Knap"
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Knapping has double "pp" is mispronounced as "p"
Remember double 'PP' in between the strings kna & ing which should not be misspelled with single 'P'
Wrong Spelling:  kna-p-ing 
Correct Spelling:  kna-pp-ing 
Find more wrongly spelled words of Knapping to spell it well.