| 摘要 |
The invention includes a generally parallelepiped-shaped building block which has at least one male engaging formation defined on a first side thereof and at least one complimentary shaped female engaging formation defined on an opposed second side thereof, the engaging formations are shaped and configured to permit at least a portion of the, or each, male engaging formation of a similar building block to be received within the, or each, female engaging formation, thereby aligning and leveling the blocks relative to each other.
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