Bubling or Bubbling: How To spell?
The word Bubling is misspelled against Bubbling, which is present continuous of "Bubble"
Bubbling has double "bb" is mispronounced as "b"Remember double 'BB' in between the strings Bu & ling which should not be misspelled with single 'B'
Wrong Spelling:  Bu-b-ling  Correct Spelling:  Bu-bb-ling 
Check more misspelled words of Bubbling to spell it correct.