Two examples, both with preverbal pöröu 'arrow' to which zerö may or may not refer.
(ra-piya-ma-story-033) Akawaio (Caesar-Fox 2003)
naigaza kuru? pöröu enno'pödï zerö ta'pï iya ji mörö.
naigaza kuru pöröu ennogï-bödï zerö ta-'pï i-ya ji mörö
how Emph arrow shoot-Iter this say-Past 3-Erg Emph A.I.?
Pro Prtcl N Vt Pro Vt P Prtcl ?
‘"How, really, will we shoot the arrow more than one time?" he said.’
(ra-piya-ma-story-034) Akawaio (Caesar-Fox 2003)
pöröu enno'pödï zerö, tait! pöröu... sorok! tait... wijagong.
pöröu ennogï-bödï zerö tait pöröu sorok tait wijagong
arrow shoot-Iter this slap arrow put.in slap other
N Vt Pro SW N SW SW N
‘We will shoot the arrow tait! one, then tait!sorok(SSW) the other.’
Two examples, both with preverbal pöröu 'arrow' to which zerö may or may not refer.