Both classes can have an alif in the visible perfect stem, but the root and various conjugational vowels differ.
FeatureHollow wāwHollow yāʾ
Rootق و لب ي ع
Active perfectقَالَبَاعَ
First-person perfectقُلْتُبِعْتُ
Active imperfectيَقُولُيَبِيعُ
With lamلَمْ يَقُلْلَمْ يَبِعْ
Active participleقَائِلٌبَائِعٌ
Passive participleمَقُولٌمَبِيعٌ
Ḍammah in قُلْتُ reflects its wāw-origin pattern, whereas kasrah in بِعْتُ reflects yāʾ. Root classification also depends on established lexical knowledge.
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Complete Paradigms of the Hollow Yāʾ Verb: Bāʿa–Yabīʿu
Both classes can have an alif in the visible perfect stem, but the root and various conjugational vowels differ.
FeatureHollow wāwHollow yāʾ
Rootق و لب ي ع
Active perfectقَالَبَاعَ
First-person perfectقُلْتُبِعْتُ
Active imperfectيَقُولُيَبِيعُ
With lamلَمْ يَقُلْلَمْ يَبِعْ
Active participleقَائِلٌبَائِعٌ
Passive participleمَقُولٌمَبِيعٌ
Ḍammah in قُلْتُ reflects its wāw-origin pattern, whereas kasrah in بِعْتُ reflects yāʾ. Root classification also depends on established lexical knowledge.