Since the Berber weavers didn't share a standard prepared language, they used these symbols to speak. The phrase bu sharwit translates as “piece of fabric” Which practically describes these rugs inside a nutshell. They may be sourced from outdated resources which have been woven together to create a new rug, https://moroccan-area-rug90000.ampblogs.com/helping-the-others-realize-the-advantages-of-moroccan-rug-buy-74582034