#N Inline inverter
#C A reaction in which the Gosper glider gun can be used to invert the
#C  presence or absence of a glider in a period 30 glider stream.
#C www.conwaylife.com/wiki/index.php?title=Gosper_glider_gun
x = 36, y = 20, rule = b3/s23
9bo26b$7bobo26b$8b2o26b5$16bo19b$17bo18b$15b3o18b2$23bobo10b$21bo3bo
10b$13bo7bo14b$12b4o4bo4bo8b2o$11b2obobo4bo12b2o$2o8b3obo2bo3bo3bo10b$
2o9b2obobo6bobo10b$12b4o20b$13bo!