أَنْتِ تَكْتُبِينَ — لَنْ تَكْتُبِي — لَمْ تَكْتُبِي
Anti taktubīna is category 2, despite addressing only one person. Its nūn disappears in subjunctive/jussive while yāʾ al-mukhāṭabah remains.
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Second-Person Feminine Singular
Four Patterns of Imperfect Mood Marking
أَنْتِ تَكْتُبِينَ — لَنْ تَكْتُبِي — لَمْ تَكْتُبِي
Anti taktubīna is category 2, despite addressing only one person. Its nūn disappears in subjunctive/jussive while yāʾ al-mukhāṭabah remains.