| http://www.w3.org/ns/prov#value | - ed distally beyond the upper lip; wherein each panel is a laminate including a core and a top layer (18???), and wherein the top layer extends over said panel edge connection portion; and wherein, upon coupling of two of said panels, the distal end (11???) of the lower lip is spaced from the other panel coupled thereto to which said tongue is connected, the spacing extending in a direction paralle
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