Ɣer ROBERT Jean Pierre (2008. P68) :  Tasnalmudt d tussna izerwen tarrayin n uselmed 1, terna-d ɣef way-a COHEN Azria (2013.P69):  Tasnalmudt d tugrint n unadi ixeddmen tasleḍt i ugbur (tamussni - issireg ...) iswi-is d aselmed d ulmad, tamselɣut, tanga taɣurbizt 2.