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The ornamental design for a structural alignment puzzle, as shown and described.
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FIG. 1 is a right side view of the structural alignment puzzle;
FIG. 2 is a left side view of the structural alignment puzzle;
FIG. 3 is a back view of the structural alignment puzzle;
FIG. 4 is a top view of the structural alignment puzzle;
FIG. 5 is a bottom view of the structural alignment puzzle;
FIG. 6 is a front view of the structural alignment puzzle;
FIG. 7 is a back perspective view of the structural alignment puzzle;
FIG. 8 is a back perspective view of the structural alignment puzzle with certain puzzle elements removed; and,
FIG. 9 is an exploded view of the structural alignment puzzle.
Lennon, Matthew F., Lennon, Patricia A.
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