D tussna izerrwen amawal n tutlayt. Yezmer daɣen ad yili d tiẓri i d-yettawin ɣef usuddes n yimawalen d wuguren i d-nettmagar deg-s. Awal-a  tasnawalt  yekka-d seg  tussna/issin  science +  awal  mot.