D yiwen n ugmam i yettaǧan idamen ad lḥun deg tfekka ; yezga-d deg tama tazlmaḍt n yidmaren. Ul, yesɛa azal 15 cm, yewzen azal 325 n yigramen ; yezmer ad imud azal n 4 ɣer 5 n litrat seg mi ara d-ilal alama d lmut. Yal ass ul ilaq ad yekkat azal n 100000 n tikal. Ul d yiwen n ugmam agejdan deg dunit n umdan, ul d yiwen uzamul i d-yemmalen leḥmala gar yimdanen ; sexdamen-t iwakken ad d-senfalin iḥulfan  nsen (MAHRAZI, 2017 : 204/205).