#C High-period oscillator built by David Dauthier, showing
#C  a common crystal forming on a glider stream. Several adjustable
#C  high-period guns have been constructed that make use of two
#C  identical copies of this repeatable growth-and-decay reaction.
#C  It is also possible to support a single crystal of adjustable
#C  length, and extract a glider from either end of the reaction.
#C See, e.g., p08832.lif in Jason Summers' "guns2j" collection.
x = 252, y = 221, rule = B3/S23
90b2o68b2o$90b2o16b2o32b2o16b2o$108b2o32b2o4$89b3o8b2o48b2o8b3o$89b3o
8b2o48b2o8b3o$88bo3bo66bo3bo$108b3o30b3o$27b2o58b2o3b2o6bo6bo3bo28bo3b
o6bo6b2o3b2o58b2o$29bo69bobo48bobo69bo$16b2o12bo67bo3bo3bo5bo26bo5bo3b
o3bo67bo12b2o$16b2o4bo7bo8b2o57b5o3b2o3b2o26b2o3b2o3b5o57b2o8bo7bo4b2o
$13b2o5b2o8bo8b2o56b2o3b2o44b2o3b2o56b2o8bo8b2o5b2o$5b2o5b3o5bo2b2o4bo
57b3o8b5o46b5o8b3o57bo4b2o2bo5b3o5b2o$5b2o6b2o6b5ob2o62b2o6b3o7bo32bo
7b3o6b2o62b2ob5o6b2o6b2o$16b2o4bo68b2o7bo7bob2o28b2obo7bo7b2o68bo4b2o$
16b2o74b2o14bo34bo14b2o74b2o$90bobo15bo3bo26bo3bo15bobo$90b2o8bo8bo2bo
26bo2bo8bo8b2o$18b2o79bobo7b5o24b5o7bobo79b2o$16bo3bo78bo9b5o24b5o9bo
78bo3bo$10b2o3bo5bo63b2o3b2o16b2o3b2o22b2o3b2o16b2o3b2o63bo5bo3b2o$10b
2o2b2obo3bo2bobo58b2o3b2o17b5o24b5o17b2o3b2o58bobo2bo3bob2o2b2o$15bo5b
o3bo71b2o4bo6b3o26b3o6bo4b2o71bo3bo5bo$16bo3bo8b2o56b3o7b2o12bo28bo12b
2o7b3o56b2o8bo3bo$18b2o9b2o56b3o72b3o56b2o9b2o$88bo74bo3$13bo8b2o204b
2o8bo$11bobo6bo2bo204bo2bo6bobo$4b2o4bobo7bo3bo2b2o194b2o2bo3bo7bobo4b
2o$4b2o3bo2bo7bo2b2o2b3o57b2o74b2o57b3o2b2o2bo7bo2bo3b2o$10bobo16b2obo
12bo41b2o21b2o28b2o21b2o41bo12bob2o16bobo$11bobo4b3o8bo2bo5b2o6bo63b2o
28b2o63bo6b2o5bo2bo8b3o4bobo$13bo15b2obo5b2o4b3o158b3o4b2o5bob2o15bo$
27b3o192b3o$27b2o194b2o$87bobo72bobo$87b2o74b2o$88bo74bo18$65b2o118b2o
$64b3o118b3o$64b2obo116bob2o$65b3o116b3o$66bo118bo13$23b2o202b2o$23b3o
200b3o$9bo15b2obo5b2o4b3o166b3o4b2o5bob2o15bo$7bobo4b3o8bo2bo5b2o6bo
166bo6b2o5bo2bo8b3o4bobo$6bobo16b2obo12bo168bo12bob2o16bobo$2o3bo2bo7b
o2b2o2b3o200b3o2b2o2bo7bo2bo3b2o$2o4bobo7bo3bo2b2o202b2o2bo3bo7bobo4b
2o$7bobo6bo2bo212bo2bo6bobo$9bo8b2o212b2o8bo4$14b2o9b2o198b2o9b2o$12bo
3bo8b2o198b2o8bo3bo$11bo5bo3bo208bo3bo5bo$6b2o2b2obo3bo2bobo206bobo2bo
3bob2o2b2o$6b2o3bo5bo216bo5bo3b2o$12bo3bo218bo3bo$14b2o220b2o3$12b2o
224b2o$12b2o4bo214bo4b2o$b2o6b2o6b5ob2o202b2ob5o6b2o6b2o$b2o5b3o5bo2b
2o4bo200bo4b2o2bo5b3o5b2o$9b2o5b2o8bo8b2o178b2o8bo8b2o5b2o$12b2o4bo7bo
8b2o178b2o8bo7bo4b2o$12b2o12bo198bo12b2o$25bo40b2o116b2o40bo$23b2o41b
3o114b3o41b2o$65bob2o114b2obo$65b3o116b3o$66bo118bo2$66bo118bo$65b3o
116b3o$65bob2o114b2obo$23b2o41b3o114b3o41b2o$25bo40b2o116b2o40bo$12b2o
12bo198bo12b2o$12b2o4bo7bo8b2o178b2o8bo7bo4b2o$9b2o5b2o8bo8b2o178b2o8b
o8b2o5b2o$b2o5b3o5bo2b2o4bo200bo4b2o2bo5b3o5b2o$b2o6b2o6b5ob2o202b2ob
5o6b2o6b2o$12b2o4bo214bo4b2o$12b2o224b2o3$14b2o220b2o$12bo3bo218bo3bo$
6b2o3bo5bo216bo5bo3b2o$6b2o2b2obo3bo2bobo206bobo2bo3bob2o2b2o$11bo5bo
3bo208bo3bo5bo$12bo3bo8b2o198b2o8bo3bo$14b2o9b2o198b2o9b2o4$9bo8b2o
212b2o8bo$7bobo6bo2bo212bo2bo6bobo$2o4bobo7bo3bo2b2o202b2o2bo3bo7bobo
4b2o$2o3bo2bo7bo2b2o2b3o200b3o2b2o2bo7bo2bo3b2o$6bobo16b2obo12bo168bo
12bob2o16bobo$7bobo4b3o8bo2bo5b2o6bo166bo6b2o5bo2bo8b3o4bobo$9bo15b2ob
o5b2o4b3o166b3o4b2o5bob2o15bo$23b3o200b3o$23b2o202b2o13$66bo118bo$65b
3o116b3o$64b2obo116bob2o$64b3o118b3o$65b2o118b2o18$88bo74bo$87b2o74b2o
$87bobo72bobo$27b2o194b2o$27b3o192b3o$13bo15b2obo5b2o4b3o158b3o4b2o5bo
b2o15bo$11bobo4b3o8bo2bo5b2o6bo63b2o28b2o63bo6b2o5bo2bo8b3o4bobo$10bob
o16b2obo12bo41b2o21b2o28b2o21b2o41bo12bob2o16bobo$4b2o3bo2bo7bo2b2o2b
3o57b2o74b2o57b3o2b2o2bo7bo2bo3b2o$4b2o4bobo7bo3bo2b2o194b2o2bo3bo7bob
o4b2o$11bobo6bo2bo204bo2bo6bobo$13bo8b2o204b2o8bo3$88bo74bo$18b2o9b2o
56b3o72b3o56b2o9b2o$16bo3bo8b2o56b3o7b2o12bo28bo12b2o7b3o56b2o8bo3bo$
15bo5bo3bo71b2o4bo6b3o26b3o6bo4b2o71bo3bo5bo$10b2o2b2obo3bo2bobo58b2o
3b2o17b5o24b5o17b2o3b2o58bobo2bo3bob2o2b2o$10b2o3bo5bo63b2o3b2o16b2o3b
2o22b2o3b2o16b2o3b2o63bo5bo3b2o$16bo3bo78bo9b5o24b5o9bo78bo3bo$18b2o
79bobo7b5o24b5o7bobo79b2o$90b2o8bo8bo2bo26bo2bo8bo8b2o$90bobo15bo3bo
26bo3bo15bobo$16b2o74b2o14bo34bo14b2o74b2o$16b2o4bo68b2o7bo7bob2o28b2o
bo7bo7b2o68bo4b2o$5b2o6b2o6b5ob2o62b2o6b3o7bo32bo7b3o6b2o62b2ob5o6b2o
6b2o$5b2o5b3o5bo2b2o4bo57b3o8b5o46b5o8b3o57bo4b2o2bo5b3o5b2o$13b2o5b2o
8bo8b2o56b2o3b2o44b2o3b2o56b2o8bo8b2o5b2o$16b2o4bo7bo8b2o57b5o3b2o3b2o
26b2o3b2o3b5o57b2o8bo7bo4b2o$16b2o12bo67bo3bo3bo5bo26bo5bo3bo3bo67bo
12b2o$29bo69bobo48bobo69bo$27b2o58b2o3b2o6bo6bo3bo28bo3bo6bo6b2o3b2o
58b2o$108b3o30b3o$88bo3bo66bo3bo$89b3o8b2o48b2o8b3o$89b3o8b2o48b2o8b3o
4$108b2o32b2o$90b2o16b2o32b2o16b2o$90b2o68b2o!