Пре­об­ра­зуй­те, если это не­об­хо­ди­мо, слово TWELVE так, чтобы оно грам­ма­ти­че­ски со­от­вет­ство­ва­ло со­дер­жа­нию тек­ста.

I live in a block of flats in one of the residential areas of my town. My flat is on the _____ floor. When the lift is faulty, it is very hard to get to the flat on foot.