The light nūn of emphasis is a non-geminated, vowelless nūn. It cannot be forced into every slot occupied by the heavy nūn; the source chart leaves six slots as dashes.
PositionLight-nūn activeLight-nūn passive
هُوَلَيَقُولَنْلَيُقَالَنْ
هُمَا (م)——
هُمْلَيَقُولُنْلَيُقَالُنْ
هِيَلَتَقُولَنْلَتُقَالَنْ
هُمَا (ف)——
هُنَّ——
أَنْتَلَتَقُولَنْلَتُقَالَنْ
أَنْتُمَا (م)——
أَنْتُمْلَتَقُولُنْلَتُقَالُنْ
أَنْتِلَتَقُولِنْلَتُقَالِنْ
أَنْتُمَا (ف)——
أَنْتُنَّ——
أَنَالَأَقُولَنْلَأُقَالَنْ
نَحْنُلَنَقُولَنْلَنُقَالَنْ
A dash indicates a non-used formation in the book's paradigm, not an accidentally missing entry. The distinctions between active/passive and allowable positions both matter.