Ape is used to express the inchoative only with choke 'be angry', fatige 'be tired' and some verbs expressing a change of state. In all other cases an auxiliary (vini 'become', det 'be, get', komonse 'begin') is used.
Source: Neumann 1985: 212
Source: Neumann 1985: 212
Source: Neumann 1985: 253
Source: Neumann 1985: 259
Source: Neumann 1985: 259