If used in a non-past discourse context, unmarked statives have present or generic reference, whereas unmarked non-statives usually have generic or habitual reference. Present reference of unmarked non-statives is attested with speech verbs, e.g. pama ‘tell’. Where other non-statives have non-past reference which is nongeneric, they appear in a modifed form.
Source: Kouwenberg 1992: 287
Source: Kouwenberg 1994: 324
Source: Kouwenberg 1994: 325
Source: Kouwenberg 1994: 354