Alaḥsab n yifmiden smersen ineɣmasen n Tilibizyu tis4 d Birbir Tilibizyu deg uheggi n yiḍrisen-nsen s teqbaylit, Tilibizyu tis4 tufrar-d deg usexdem n yisuddimen s wazal n 64, 66% ma nserwes-itt ɣer Birbir tilibizyu.