The word Mosing is misspelled against Mossing, which is present continuous of "Moss"
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Mossing has double "ss" is mispronounced as "s"
Remember double 'SS' in between the strings mo & ing which should not be misspelled with single 'S'
Wrong Spelling:  mo-s-ing 
Correct Spelling:  mo-ss-ing 
Find more incorrect spellings of Mossing to spell right way.