Due To divergence of variants, some distinctive morphemes aren't located in Common Chinese. Characters almost never used in Common Chinese have also been made or inherited from archaic literary requirements to signify these one of a kind morphemes. For instance, figures like 冇 and 係 are actively used in Cantonese https://share.evernote.com/note/162fa3fd-95b9-bbc3-9a79-d014125a6e46