Cis-bookend and bun is a 14-cell strict still life consisting of a bookend and a bun stabilising each other. It is one of seven ways in which a bookend and a bun can be arranged to create a still life, and one of the six which has two separate islands.
This specific arrangement is named cis due to their inducting faces not being skewed from each other, and the "denser" parts of each island are roughly on the same side.
Cis-bookend and bun is the sixty-fifth most common still life in Achim Flammenkamp's census, being less common than boat with long tail but more common than beehive at loaf.[1] It is also the seventy-ninth most common object on Adam P. Goucher's Catagolue.[2]
All strict still lifes with a population of 22 or fewer cells, all oscillators with 16 or fewer cells, and all spaceships with 31 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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