Mosing or Mossing: How To spell?
The word Mosing is misspelled against Mossing, which is present continuous of "Moss"
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.