I claim the ornamental design for a set of bed sheets, as shown and described.
FIG. 1 is an exploded bottom perspective view of a set of bed sheets, showing my new design with a top sheet separated from a fitted sheet;
FIG. 2 is a bottom perspective view thereof;
FIG. 3 is a left-side elevational view of FIG. 2, the right-side elevational view being a mirror image thereof;
FIG. 4 is a front elevational view of FIG. 2;
FIG. 5 is a rear elevational view of FIG. 2;
FIG. 6 is a bottom plan view of FIG. 2; and,
FIG. 7 is a top plan view of FIG. 2.
It is understood that the rear view of the fitted sheet is a mirror image of the front view thereof, and that the left-side view of the fitted sheet is a mirror image of the right-side view of the fitted sheet.