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Which summary correctly describes the 14-form effect of لَمْ?

Rule of Past Absolute Negation with "Lam" (لَمْ) & Weak Letters

• 5 take Jazm at the ending, 7 lose Noon-e-I'raabi, 2 remain unchanged
• All 14 take Fathah
• All 14 lose their final letter
• Only weak verbs are affected