نَحْوُ: «جَاءَنِي الْقَوْمُ كُلُّهُمْ أَجْمَعُونَ، أَكْتَعُونَ، أَبْتَعُونَ، أَبْصَعُونَ».
Translation: For example: the entire people came to me—each and every one of them, with successive forms of emphasis.
Kulluhum is nominative. Ajmaʿūn, aktaʿūn, abtaʿūn, abṣaʿūn are nominative plural emphasis forms, not additional subjects.