The ornamental design for a constructionsetelement, as shown and described.
FIG. 1 is a top perspective view of a construction set element showing the new design;
FIG. 2 is a bottom perspective view of the construction set element of FIG. 1;
FIG. 3 is a top plan view of the construction set element of FIG. 1;
FIG. 4 is a bottom plan view of the construction set element of FIG. 1;
FIG. 5 is a left side elevational view of the construction set element of FIG. 1;
FIG. 6 is a right side elevational view of the construction set element of FIG. 1;
FIG. 7 is a front elevational view of the construction set element of FIG. 1; and,
FIG. 8 is a rear elevational view of the construction set element of FIG. 1.
The evenly spaced broken lines and unshaded surfaces are included to identify parts of the article's appearance that form no part of the claimed design. The dash-dot broken lines define the boundaries of the claimed design and form no part thereof.