[k'ʷi ibil b-erčː-ib-le=l a-b-erčː-ib-le=l] a-b-alχ-ad
two ORD N-drink.PFV-PRET-CVB=INDQ NEG-N-drink.PFV-PRET-CVB=INDQ NEG-N-know.IPFV-1.PRS
I don't know whether (they) drank the second (bottle) or not.