Complex sentence: The Jalilavand tribe is largely found in Lorestan province, in Kuhdesht which is one of the main Laki speaking cities, and in Kermanshah, where they have 20 villages in the Bistun/ChemChamal region shared with Piravand (another Laki speaking tribe).
Split into simpler sentences: The Jalilavand tribe is largely found in Lorestan province, in Kuhdesht which is one of the main Laki speaking cities. And in Kermanshah, where they have 20 villages in the Bistun/ChemChamal region shared with Piravand (another Laki speaking tribe).