The lexical verb sabi (fu) can be used to express mental ability, whereas kan is used to express physical ability, general ability, root possibility, and permissibility. In addition, man fu can be used to express ability in late 18th- century Sranan. They cannot be used for epistemic possibility; epistemic possibility is expressed by sa.
Source: Schumann 1783: 81
Source: Schumann 1783: 169
Source: Schumann 1783: 107
Source: van Dyk ca. 1765: 64