لَنْ يَكْتُبَا الدَّرْسَ.
Lan is subjunctive; yaktubā has deleted nūn; dual alif is the subject pronoun and ad-darsa is the direct object.
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Parse a Dual Example
Four Patterns of Imperfect Mood Marking
لَنْ يَكْتُبَا الدَّرْسَ.
Lan is subjunctive; yaktubā has deleted nūn; dual alif is the subject pronoun and ad-darsa is the direct object.