The question asks for the morphological pattern (الوزن الصرفي) of the word استغفر, which means "to seek forgiveness." In Arabic morphology (علم الصرف), every verb is analysed by mapping its letters onto a root pattern using the template letters ف-ع-ل.
The root of استغفر is غ-ف-ر (gh-f-r), which carries the core meaning of "forgiveness" (as in غَفَرَ, "he forgave"). The prefix است- (ista-) is added to this root to form Form X (الباب العاشر), which typically conveys the meaning of "seeking" or "requesting" the action of the root. So استغفر literally means "to seek forgiveness." Mapping the letters: است = است, غ = ف, ف = ع, ر = ل, giving the pattern استفعل.
The other patterns represent different verb forms: أُفعل is Form IV (for making something transitive or causative), انفعل is Form VII (for reflexive or passive meaning), and تفعّل is Form V (for reflexive of the intensive). Recognising the است- prefix as the hallmark of Form X (استفعل) is the key to answering this type of morphology question.
