#CSYNTH xp138_w8gw259r84z79431y1go4iszx42rik8w12 costs 12 gliders (true). #CLL state-numbering golly x = 29, y = 29, rule = B3/S23 11bo$12b2o$11b2o4$10bo$8bobo$9b2o3bobo4bo$14b2o4bo$15bo4b3o$26bobo $8bo17b2o$9b2o16bo$8b2o9b2o$bo16b2o$b2o17bo$obo$6b3o4bo$8bo4b2o$7b o4bobo3b2o$18bobo$18bo4$16b2o$15b2o$17bo!