Chuming or Chumming: How To spell?
The word Chuming is misspelled against Chumming, which is present continuous of "Chum"
Chumming has double "mm" is mispronounced as "m"Remember double 'MM' in between the strings chu & ing which should not be misspelled with single 'M'
Wrong Spelling:  chu-m-ing  Correct Spelling:  chu-mm-ing 
Check more misspelled words of Chumming to spell it correct.