Ixef 02 : Tanḍawit tamsislant-tasnislant 3. Tanḍawit tamsislant-tasnilsant tettbeddil ilmend n tergalin d teɣra 3.1. Imeskilen n tenḍawit tamsislant 3.1.1. Tizenzeɣt a) Tizenzeɣt n yimesli [B] < [ β ]