Cubing or Cubbing: How To spell?

The word Cubing is misspelled against Cubbing, which is present continuous of "Cub"

Cubbing has double "bb" is mispronounced as "b"
Remember double 'BB' in between the strings Cu & ing which should not be misspelled with single 'B'
Wrong Spelling: Cu-b-ing
Correct Spelling: Cu-bb-ing
Check more misspelled words of Cubbing to spell it correct.