The prohibitive numiste correspond to the negated verb miste 'need, have to'.
Notice that there is some morphologic variation in the negator of modal verbs (nungsabe vs. nungku sabe 'don't know'; nungkere vs. ningkere 'don't want', etc.).
Source: Philippe 2011: 96
Source: Philippe 2011: 88
Source: Philippe 2011: 88