FIG. 1 shows a perspective view of a single block of a set of blocks having an opening on the right-hand side and a cover;
FIG. 2 shows a perspective view of another single block of the set of blocks having an opening on the front side and a cover;
FIG. 3 shows a perspective view of still another single block of the set of blocks;
FIG. 4 shows an example of a structure using the blocks of the set shown in FIGS. 1-3, in which the blocks of FIGS. 1 and 2 are depicted without their respective covers;
FIG. 5 shows a perspective view of the structure depicted in FIG. 4;
FIG. 6 shows an example of another structure using some of the blocks of the set shown in FIGS. 1-3, in which the blocks of FIGS. 1 and 2 are depicted with their respective covers;
FIG. 7 shows a perspective view of the structure depicted in FIG. 6;
FIG. 8 shows another example of a structure using some of the blocks of the set shown in FIGS. 1-3, in which some of the blocks are depicted with their respective covers and some of the blocks are depicted without their respective covers;
FIG. 9 shows a perspective view of the structure depicted in FIG. 8;
FIG. 10 shows still another example of a structure using some of the blocks of the set shown in FIGS. 1-3, in which the blocks are depicted without their respective covers and some of the blocks are depicted without their respective covers;
FIG. 11 shows a perspective view of the structure depicted in FIG. 10;
FIG. 12 shows a front view of the block shown in FIG. 1 with the cover in place;
FIG. 13 shows a bottom view of the block shown in FIG. 1 with the cover in place;
FIG. 14 shows a front view of the block shown in FIG. 2 without the cover in place;
FIG. 15 shows a bottom view of the block shown in FIG. 2 without the cover in place;
FIG. 16 shows a front view of the block shown in FIG. 2 with the cover in place;
FIG. 17 shows a bottom view of the block shown in FIG. 2 with the cover in place;
FIG. 18 shows a front view of the block shown in FIG. 3; and,
FIG. 19 shows a bottom view of the block shown in FIG. 3.
Any surfaces of the design not shown form no part of the claimed invention.