There is a class of adjectives in Berbice Dutch which, in addition to their stative adjective use and interpretation, also pattern fully with event verbs. These forms appear quite unproblematically with both the perfective and imperfective aspectual suffixes, with predictable interpretations. There are, however, also adjectives which do not accept the imperfective suffix, although they may appear with perfective. These include potɛ 'old' and moi 'good'.
Source: Kouwenberg 1996: 32
Source: Kouwenberg 2007: 30