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Which is the dual form of مَفْعَلٌ in the source-displayed grid?

Derived Nouns: Noun of Place and Time (Ism Dharf)

• مَفْعَلَانِ
• مَفَاعِلُ
• مَفْعَلُوْنَ
• مَفْعَلَاتٌ