1 verse has
وَكَأَيِّن
in Edition Uthmani / Al-Hajj (The Pilgrimage)

48:22وَكَأَيِّن مِّن قَرْيَةٍ أَمْلَيْتُ لَهَا وَهِىَ ظَالِمَةٌۭ ثُمَّ أَخَذْتُهَا وَإِلَىَّ ٱلْمَصِيرُ