All three verbs are hollow, but their stems vary by original weak radical and vocalic pattern.
VerbRootPresent1st person pastCommand
قَالَق و ليَقُولُقُلْتُقُلْ
بَاعَب ي عيَبِيعُبِعْتُبِعْ
خَافَخ و فيَخَافُخِفْتُخَفْ
خِفْتُ — خُفْتُ
Translation: I feared (active) — I was feared (passive). The forms differ by a vowel despite sharing the same radicals.
A visible alif in the third-person past does not establish the present-stem vowel or the full paradigm.
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All three verbs are hollow, but their stems vary by original weak radical and vocalic pattern.
VerbRootPresent1st person pastCommand
قَالَق و ليَقُولُقُلْتُقُلْ
بَاعَب ي عيَبِيعُبِعْتُبِعْ
خَافَخ و فيَخَافُخِفْتُخَفْ
خِفْتُ — خُفْتُ
Translation: I feared (active) — I was feared (passive). The forms differ by a vowel despite sharing the same radicals.
A visible alif in the third-person past does not establish the present-stem vowel or the full paradigm.