Stair

FIG. 1 is a front, left, and top perspective view of a stair in a first configuration, showing my new design;

FIG. 2 is a rear, right, and top perspective view thereof;

FIG. 3 is a front elevational view thereof;

FIG. 4 is a rear elevational view thereof;

FIG. 5 is a left-side elevational view thereof;

FIG. 6 is a right-side elevational view thereof;

FIG. 7 is a top plan view thereof;

FIG. 8 is a bottom plan view thereof; and,

FIG. 9 is a perspective view of the stair in a second configuration.