x1=k1 is a bathroom, in which x2=l1 washes x3=l2 (self/other(s)/body part), in home/building/structure x4=k2 surrounded by partitions/walls/ceiling/floor x5=k3 (mass/jo'u)
x1=k1 is a loo/water closet/[room with toilet], in which x2=v1 excretes x3=v2, in home/building/structure x4=k2 surrounded by partitions/walls/ceiling/floor x5=k3 (mass/jo'u)