LessonsAttached Trilateral (Mujarrad) - Bab 1: Fa'lalah & Bab 2: Fa'nalahQuiz

The first example is جَلْبَبَ.
Its base root is triliteral: ج، ل، ب.
The form follows the quadrilateral-looking pattern فَعْلَلَ.
Its Masdar is جَلْبَبَةٌ, meaning to wear or put on a cloak/large outer garment.

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