2 verses have
فَكَانَتْ
in Edition Uthmani / An-Naba (The Announcement)

19:78وَفُتِحَتِ ٱلسَّمَآءُ فَكَانَتْ أَبْوَٰبًۭا

20:78وَسُيِّرَتِ ٱلْجِبَالُ فَكَانَتْ سَرَابًا