II-5:Tasnislit Ɛla ḥesab n DUBOIS, tasnislit d tussna izerrwen imesla n umslay n umdan seg tama n twuri-nsen deg unagraw n teywalt tasnilsant .tettwasbded ɣef tesleḍt n tayunin tifrarayin (imeslicen, tignuzlitin) yettwasgedlen ɣer ugama ukemmilen n yimsla22.