Bookends

Bookends (or cis-mirrored hook) is a still life composed of two bookends.

Bookends
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Pattern type Strict still life
Number of cells 14
Bounding box 7×4
Frequency class 18.7
Discovered by Unknown
Year of discovery Unknown

Commonness

Bookends is the forty-sixth most common still life in Achim Flammenkamp's census, being less common than dead spark coil but more common than elevener.[1] It is also the fifty-third most common object on Adam P. Goucher's Catagolue.[2]

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gollark: Discord's got a worrying privacy policy, tends to break randomly, has random UI changes, has the ridiculous "no custom clients" thing, is primarily free and thus probably monetizing in problematic ways, is closed-source and not self-hostable, and has kind of bad UI.
gollark: It's basically just direct client/client communication instead of client-server-client.
gollark: P2P is more than "the torrent thing".
gollark: *Was*, before they changed that.

See also

References
  1. Achim Flammenkamp (September 7, 2004). "Most seen natural occurring ash objects in Game of Life". Retrieved on January 15, 2009.
  2. Adam P. Goucher. "Statistics". Catagolue. Retrieved on June 24, 2016.
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