The same seven positions lose the inflectional nūn after lam as they do after lan.
Word / formMeaning / explanation
يَفْعَلَانِ ← لَمْ يَفْعَلَاthe two did not do.
تَفْعَلُونَ ← لَمْ تَفْعَلُواyou (masc. plural) did not do.
تَفْعَلِينَ ← لَمْ تَفْعَلِيyou (one woman) did not do.
The resulting endings after lan and lam look the same in these positions; the initial particle and its temporal meaning distinguish the constructions.
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Negating the Imperfect with Lan and Lam: Subjunctive, Jussive and Full Paradigms
The same seven positions lose the inflectional nūn after lam as they do after lan.
Word / formMeaning / explanation
يَفْعَلَانِ ← لَمْ يَفْعَلَاthe two did not do.
تَفْعَلُونَ ← لَمْ تَفْعَلُواyou (masc. plural) did not do.
تَفْعَلِينَ ← لَمْ تَفْعَلِيyou (one woman) did not do.
The resulting endings after lan and lam look the same in these positions; the initial particle and its temporal meaning distinguish the constructions.