The ornamental design for a buildingstructure, substantially as shown.
FIG. 1 is a view in perspective of a building structure according to my
invention, and representing a view of what may form the front/side, or
rear/side, or vice versa, of such building structure, but which for ease
of description will be designated as a front/side view.
FIG. 2 is a plan view of the building structure of FIG. 1.
FIG. 3 is an end elevation view of the building structure of FIG. 1,
according to the illustrative convention adopted for FIG. 1.
FIGS. 4 and 5 are opposite side elevation views of the building structure
of FIG. 1.