Perpendicular is sometimes called Third Pointed and was employed over three centuries; the fan-vaulted staircase at Christ Church, Oxford built around 1640.
Tazɣaqt isim net alwaqqan iyyad titbaqqet tan karadat tolas exdam sisim wen har ijja 300 n awatay; fan-vaulted staircase daɣ egliz tan Christ, idayan daɣ Oxford edes n awatay wan 1640.