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Which of the following forms will change its ending Dhummah (پیش) into a Fathah (زبر) when لَنْ is introduced?

Rule of Emphatic Negation in Future with "Lan" (لَنْ)

• يَفْعُلَانِ
• يَفْعُلُ
• يَفْعُلْنَ
• يَفْعُلُوْنَ