I.on [美 ɑn, ɔn, 英 ɒn]介词on often appears as the second element of certain verb structures in English (count on, lay on, sign on, etc). For translations, see the relevant verb entry (count, lay, sign, etc).
The narthex has a half-hipped roof with a restored three-lighted perpendicular gothic window set left of centre on the west face above the entrance door.