#N Dart
#O David Bell
#C An orthogonal period 3 spaceship with speed c/3 that was found in May 1992.
#C www.conwaylife.com/wiki/index.php?title=Dart
x = 15, y = 10, rule = B3/S23
7bo7b$6bobo6b$5bo3bo5b$6b3o6b2$4b2o3b2o4b$2bo3bobo3bo2b$b2o3bobo3b2ob$
o5bobo5bo$bob2obobob2obo!