Use Group 3 in Different Past Forms

فَعَلَ Vocabulary: Meaningful Groups and Application

عَقَلْنَا — we understood / used reason
نَظَرَتْ — she looked
صَدَقُوا — the men spoke the truth
كَذَبْتُ — I lied

All four recover to a basic فَعَلَ verb, even though their meanings differ.