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Which form correctly shows لَمْ with a sound-final singular masculine Ghaa'ib pattern?

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

• لَمْ يَفْعُلْ
• لَمْ يَفْعُلَ
• لَمْ يَفْعُلُ
• لَمْ يَفْعُلُونَ