#C c/4 diagonal switch-engine breeder #C two of Hartmut Holzwart's diagonal c/4 tub-and-beehive puffer #C and a c/2 period 392 backward rake interact to produce #C block-laying switch engines: David Bell, 23 July 2005 x = 152, y = 94, rule = B3/S23 77b2o$77bobo$77bo$80bo$80b2o$80b2o$79b2o$75b2ob2o$75bo4bo$75bob4o$79b 2o$79b2o$79b2o$81bob3o$77bo2bo$76b5o6bo$76bo2b2o5bobo$74bobo10bo$73b3o 4bo$73bo2b2o$77b3o$77b2o10bo$79bo8bobo3bo$77bobo8bobo2bobo$70b2o4b2o 11bo4bo$69b2o5b2obo$71bo4b2ob2obo2b2o$76b3obobo2bobo$67b2o3b2o2b2o7bo 10bo$66b2o3b2o15bo6bobo3bo$68bo2b3o14b2o5bobo2bobo$70b4o14b2o6bo4bo$ 69bobo15b2o$68b2o13b2ob2o$68bobo12bo4bo$67bo15bob4o14bo$68b2o17b2o13bo bo3bo$87b2o13bobo2bobo$87b2o14bo4bo$89bo$85bo2bo4bo$84b5o4bo$84bo2b2o 4bo16bo$82bobo12bo11bobo3bo$81b3o4bo7bobo10bobo2bobo$81bo2b2o11bo12bo 4bo$85b3o$55bobo27b2o$54bo2bo29bo$53b2o30bobo11bo17bo$52bo25b2o4b2o12b obo3bo11bobo3bo$51b4o22b2o5b2obo10bobo2bobo10bobo2bobo$50bo4bo6bo16bo 4b2ob2obo8bo4bo12bo4bo$50bo2bo5b2obo21b3obobo$50bo2bo5bo15b2o3b2o2b2o$ 51bo7bo14b2o3b2o$52b4obo6b2o10bo2b3o24bo17bo$53bo3bo4bo4bo10b4o23bobo 3bo11bobo3bo$54bo6bo15bobo25bobo2bobo10bobo2bobo$54b5o2bo5bo8b2o28bo4b o12bo4bo$61b6o9bobo$54b5o16bo$54bo21b2o$53bo3bo2bo24b2o26bo17bo$11bobo 12b2o24b4obo25bo4bo23bobo3bo11bobo3bo$10bo2bo10bo4bo21bo7bob2o19bo29bo bo2bobo10bobo2bobo$9b2o7bo4bo26bo2bo5bo2bo6bo12bo5bo24bo4bo12bo4bo$8bo 6b2obo4bo5bo20bo2bo5bo2bo4bobo12b6o9b2o$7b6o2bo7b6o21bo4bo4b2o6b2o5bo 20b4o$4b2o7bo3b4o30b4o18bobo19b2ob2o$3bo3b3obo4bo35bo21b2o5bo14b2o22bo 17bo$2bo3bo3b2obo2b2obo2bo30b2o24bobo5bo31bobo3bo11bobo3bo$2bo5b2o3bo 5bo6b2o26bo2bo22b2o5bo31bobo2bobo10bobo2bobo$2b3o3b4obo7bobo2b3o26bobo 27bobo32bo4bo12bo4bo$11bo9bo6bo57b2o$2b3o6bobo7bo6bo5bo73b2o$bo5bo5bo 8bo4bo4bobo3b2o2b2o2b2o2b2o2b2o2b2o2b2o2b2o2b2o2b3ob2o27bo2bo3b3o$o3b 2obo3b2o11b2o7b2o3b2o2b2o2b2o2b2o2b2o2b2o2b2o2b2o2b2o2b4o2bo27b2o6bo 10bo17bo$o3bo6b3o62bob2o35bo10bobo3bo11bobo3bo$o3b2obo3b2o11b2o7b2o3b 2o2b2o2b2o2b2o2b2o2b2o2b2o2b2o2b2o2b2o50bobo2bobo10bobo2bobo$bo5bo5bo 8bo4bo4bobo3b2o2b2o2b2o2b2o2b2o2b2o2b2o2b2o2b2o2b2o34b2o15bo4bo12bo4bo $2b3o6bobo7bo6bo5bo75bo2bo$11bo9bo6bo80b2o$2b3o3b4obo7bobo2b3o78bo$2bo 5b2o3bo5bo6b2o50b2o27bo10b2o14bo$2bo3bo3b2obo2b2obo2bo54b2ob2o25bo4bo 5b2o13bobo3bo$3bo3b3obo4bo61b4o6b2o19b3o21bobo2bobo$4b2o7bo3b4o58b2o6b 2ob3o41bo4bo$7b6o2bo7b6o59b5o$8bo6b2obo4bo5bo59b3o$9b2o7bo4bo95b2o$10b o2bo10bo4bo88b2ob4o$11bobo12b2o91b6o$120b4o!