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Ssefsa-d txebbus-nnek: Imewwaṛen n LED n tbeṛṛa n tbeṛṛayt n ttbanen. Ṛuḥaṛ n LED Teknollif n LED 5. Ifadden n tmeddurt n tmedda. Tisdiwen n tmeɣra n tmerwin. Tɛeddaḍen n LED D irebḥen n tmerrbem