The word Stroping is misspelled against Stropping, which is present continuous of "Strop"
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Stropping has double "pp" is mispronounced as "p"
Remember double 'PP' in between the strings stro & ing which should not be misspelled with single 'P'
Wrong Spelling:  stro-p-ing 
Correct Spelling:  stro-pp-ing 
Find more incorrect spellings of Stropping to spell right way.