Unless you're specifically enunciating it. The common usage lacks the L sound, but it is acceptable to intentionally add it back in for disambiguation
Consider the way "Commonwealth Bank" is pronounced in this news story: https://youtube.com/watch?v=MhkuHGRAAbg. An Australian English speaker would consider (most) Americans to be saying something like "Carmenwealth" rather "Commonwealth". See also the pronunciation of dog vs father in https://www.goalsenglish.com/lessons/2020/5/4/australian-eng....
It really ruins some poetry.
Traditionally, calm and com- have different vowels in English, but most North American accents merge com- into calm. All other major English accents retain the distinction.
If you're American, try saying 'com' while rounding your lips. Or just listen to a recording of 'common' in an online dictionary from Britain or Australia. (Or lot, pot, spot, etc.)
TLDR (simplified):
US/Ca: (lot = palm) ≠ start
UK/Au: lot ≠ (palm = start)