The word Musing is misspelled against Mussing, which is present continuous of "Muss"
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Mussing has double "ss" is mispronounced as "s"
Remember double 'SS' in between the strings mu & ing which should not be misspelled with single 'S'
Wrong Spelling: mu-s-ing
Correct Spelling: mu-ss-ing
Check more misspelled words of Mussing to spell it correct.