Shift-mirrored bun (or skew R-bees or up bun up on bun) is a 14-cell still life. It is one of the five still lifes made of two buns stabilizing each other.
Information on this still life's commonness with respect to other naturally-occurring patterns is currently unknown.
All strict still lifes with a population of 23 or fewer cells, all oscillators with 16 or fewer cells, and all spaceships with 35 or fewer cells are known to be glider-constructible. A glider synthesis of this object can be found in the infobox to the right.
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