Negative concord is generally maintained with negative polarity items like narie ‘nobody’, nunka ‘never’, tampoko ‘neither’ and na(a) ‘nothing’ so that these items tend to be accompanied by nu (cf. na nu ‘not anything’). Exceptions to the rule are, however, not uncommon (cf. example [76] in Schwegler & Green (2007: 286), where the speaker omitted the predicate nu). Schwegler (1996) — the only source to have examined Palenquero negative concord in any detail — notes, however, that the usage of these items is complicated and would require a study in itself.
Source: Schwegler and Green 2007: 287
Source: Schwegler and Green 2007: 287