This specific isomer is namedcis due to having a smaller bounding box, as the two "ends" of each island are effectively aligned. Since the snake is a stable pattern by itself, the term on is used rather than and.
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.