These Nosov tessellations could be used as watermarks regardless. If not incorporated into the very paper of the page, it could at least be a faint detail of the final print out.
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You know about dominoes right? A polyomino is a plane geometric figure formed by joining one or more equal squares edge to edge. It is a polyform whose cells are squares. It may be regarded as a finite subset of the regular square tiling with a connected interior.
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Any way, some of my antecedent characters are polyominoes.
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