The word Bubling is misspelled against Bubbling, which is present continuous of "Bubble"
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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.