فُلْكٌ — قُفْلٌ — أُسْدٌ
The book contrasts the singular’s pattern (like qufl) and the plural’s understood pattern (like usd), even though the surface form fulk is shared. This is a specialized morphological point.
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The Subtle Fulk Example
Plural Nouns: Sound, Broken, Paucity and Abundance
فُلْكٌ — قُفْلٌ — أُسْدٌ
The book contrasts the singular’s pattern (like qufl) and the plural’s understood pattern (like usd), even though the surface form fulk is shared. This is a specialized morphological point.