Long tail

Long tail
x = 2, y = 4, rule = B3/S23 bo$bo$o$2o! #C [[ THUMBSIZE 2 THEME 6 GRID GRIDMAJOR 0 SUPPRESS THUMBLAUNCH ]] #C [[ THUMBSIZE 3 ZOOM 21 HEIGHT 400 SUPPRESS ]]
View static image
Pattern type	Still life component
Number of cells	5
Bounding box	2 × 4
Static symmetry	C1
Discovered by	Unknown
Year of discovery	Unknown
Pattern files Plaintext longtail.cells RLE longtail.rle

Long tail (sometimes referred to as L or J) is a pentaplet and great-grandparent of the V spark. It can often be attached to still lifes to create a larger still life. The simplest such example is shillelagh, in which a long tail and a pre-block mutually stabilize one another.

The long tail is not very strongly related to the usual tail, and does not attach to as wide an array of objects, and those which it does generally have fewer isomers.

As a still life component

A green background indicates that the object the tail is added to is stable without it; a red background indicates this is not the case.

Object		Population	Other part
	Shillelagh	8		Pre-block
	Tub with long tail	9		Tub
	Boat with long tail	10		Boat
	Barge with long tail	11		Barge
	Fuse with tail and long tail		Unnamed six-tick spark
	Eleven loop		Unnamed lumps of muck predecessor