The ornamental design for a beveragecup, as shown and described.
FIG. 1 is an isometric view of a beverage cup.
FIG. 2 is a front view of the beverage cup of FIG. 1.
FIG. 3 is a top view of the beverage cup of FIG. 1; and,
FIG. 4 is a bottom view of the beverage cup of FIG. 1.
Portions of the beverage cup not shown in the drawings form no part of the claimed design. The broken lines depict a portion of the beverage cup that forms no part of the claimed design.