Datapoint Sango/The prohibitive
Although it is possible to make a prohibition by negating a simple predication, there is a special way with the construction zia [...] [NEG], as in Examples 174 and 177.
I don't think zia should have its own value. There must be something about this verb that has yet to be analyzed. It might also be a frozen borrowing from another language.
Values 
Normal imperative construction and normal negator
- Example 59-153:
-
[...], mo teen', baa, mo nyon' samba ape o[...],[...]mo2sgtene,saybaa,seemo2sgnyon'drinksambabeerapenegodef(When he offers you beer), say, "Look, I don't drink beer, thank you."
- Example 59-174:
-
meem lo mu na ala nyama, ala zaa ti te ye ni apemeemeven.iflo3sgmugivenaprepala2plnyama,meatala2plzialeavetiofteeatyethingnidetapenegEven if he gives you (singular) meat, don't eat it.
Source: nd
- Example 59-175:
-
to lo mu a mo nyama, mo te apetonganaiflo3sgmugivenaprepmo2sgnyama,meatmo2sgteeatapenegIf he gives you meat, don't eat it.
- Example 59-176:
-
mo te kasa ni mingi apemo2sgteeatkasastewnidetmingimuchapenegDon't eat much of the stew.
- Example 59-177:
-
ma za ti te kasa na apemo2sgzialeavetitoteeatkasastewnidefapenegDon't eat the stew.
- Example 59-178:
-
lango agbu le ti kogara na apelangosleepa-gbupm-seizeleeyetiofkogarain-lawnidefapenegThe mother-in-law didn't become sleepy.
- Confidence:
- Very certain