#C Starting with period 120 block layer, we thin 3 times and
#C toss off gliders in the final stage to achieve a period 960 rake. 
#I thinblocks 945 176 0 1 260
#I pufthinner 799 42 0 1 0
#I pufthinner 495 285 0 -1 0
#I pufthinner 191 42 0 1 0
#I puftoss 0 74 0 1 229