jasīsse
This refers to a unit of length, something approximating a meter or a yard.
Sentence #13:
ē ñi rājālme aþ rā jasīsse pē nō ñi jarūsa rā ja ñi jawae jīrān wā il antielen te jatōrreni jannarien;
Cross it and a few yards along, return to where nothing was altered after the completion of all things.