Bullet heptomino

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Bullet heptomino
x = 3, y = 3, rule = B3/S23 bo$3o$3o! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]]
Pattern type Miscellaneous
Number of cells 7
Bounding box 3×3
Discovered by Unknown
Year of discovery Unknown

The bullet heptomino is generation 1 of the T-tetromino and therefore is a predecessor of the traffic light. It appears as the rotor in mold.

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