The previous level supplied the map; this level uses it.
● First group: the final root letter has dammah and there is no inflectional nūn.
● Second group: the ending contains the inflectional nūn.
● Third group: يَفْعَلْنَ and تَفْعَلْنَ carry the feminine-plural ending.
Mudari Takhfif changes the ending according to the group. Identify the group before changing the verb.