Choose the correct answer

What is the basic pattern of Bab Infi'aal?

Derived Trilateral (with Hamzah) - Bab 3: Infi'aal (Infitar)

• اِنْفَعَلَ
• اِفْتَعَلَ
• اِسْتَفْعَلَ
• اَفْعَلَ