The arches had an additional practical purpose; they contained lead channels which carried rainwater off the roof; it was expelled from the mouths of stone gargoyles placed in rows on the buttresses.
Tišangiwen ilanat ittus n tasiwit ; ahan tan isarsaran wi takkasnen aman win ajjinna fal s afalla n tanda; zajaran s em n tahunt tan gargoyles tahat itartaran fal buttress