The ornamental design for a tablelegstructure, as shown and described.
FIG. 1 is a perspective view of a table leg structure, showing my new
design;
FIG. 2 is a top view thereof;
FIG. 3 is a right side elevational view thereof, the left side elevational
view, the front elevational view and the back elevational view all being
identical; and,
FIG. 4 is a bottom view thereof.
The broken lines are for environmental purposes only and form no part of
the claimed design.