1 verse has
كُنتُم
in Edition Uthmani / Adh-Dhaariyat (The Winnowing Winds)

14:51ذُوقُوا۟ فِتْنَتَكُمْ هَٰذَا ٱلَّذِى كُنتُم بِهِۦ تَسْتَعْجِلُونَ