The nūn al-niswah identifying the feminine plural is retained. Adjacent use of the heavy emphatic nūn would be awkward, so a separating alif (alif fāṣil) is inserted between the two nūns.
يَفْعَلْنَ ← لَيَفْعَلْنَانِّ — those women will certainly do.
تَفْعَلْنَ ← لَتَفْعَلْنَانِّ — you women will certainly do.
The first nūn marks feminine plural person; the last, doubled nūn marks emphasis. The textbook provides no light-nūn forms for these two positions.
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The separating alif in feminine plural forms
Emphatic Lām and the Heavy and Light Nūn Paradigms
The nūn al-niswah identifying the feminine plural is retained. Adjacent use of the heavy emphatic nūn would be awkward, so a separating alif (alif fāṣil) is inserted between the two nūns.
يَفْعَلْنَ ← لَيَفْعَلْنَانِّ — those women will certainly do.
تَفْعَلْنَ ← لَتَفْعَلْنَانِّ — you women will certainly do.
The first nūn marks feminine plural person; the last, doubled nūn marks emphasis. The textbook provides no light-nūn forms for these two positions.