The realization of different grammatical meanings of Number in the noun depends on the syntactic function and case marking.
The verb expresses three grammatical meaning of motion: neutral − /Ø-/, towards speaker /n-/, and away fro speaker /ng-/: n-Ø-armbte '(s)he is ascending' ~ n-n-armbte '(s)he is coming up (towards speaker) ~ n-ng-armbte '(s)he is going up (away from speaker) [REF].