Ad nxedmen azamul n (+) i yisental n tenfali s timawit yessemres uselmad, ma yella d azamul (-) ad yili ɣer yisental anda ur d-yettili ara useqdec n tenfalit s timawit. Azamul (+/-) nsexdam-it i yisental zemren ad ilin sexdament neɣ ur tessaxdamen ara.