1#C Three reactions in which blocks modify a passing bug: 2#C 3#C First, a diagonal, speed 8/16 bug becomes an orthogonal, 4#C speed 5/6 bug. 5#C 6#C Second, an orthogonal, speed 4/5 bug becomes an orthogonal, 7#C speed 8/12 bug. (Another 4/5 bug is shown below to make the 8#C change clearer.) 9#C 10#C Third, pairs of blocks can slow down a Bosco oscillator, giving 11#C oscillators with periods 166 + 188n. Here are a normal 12#C Bosco (p166), one using one pair of blocks (p284), and one 13#C using two pairs of blocks (p402). 14#C 15#C Dean Hickerson, May 2000. 16x = 266, y = 250, rule = R5,C0,M1,S34..58,B34..45,NM:T400,400 17114bo$113b4o$111b2ob5o$111bo3b5o$110bo5b5o$109b3o5b4o$110b3o3b5o$110b 184ob5o$111b8o$111b7o$112b5o$113b3o8$151b6o$151b6o$151b6o$151b6o$151b6o$ 19151b6o48$134b6o$134b6o$134b6o$134b6o$134b6o$134b6o7$113b2o$112b5o$111b 208o$110bob8o$109b2o4b5o$109b2o4b5o$109b2o4b5o$110bob8o$111b8o$112b5o$ 21113b2o9$113b2o$112b5o$111b8o$110bob8o$109b2o4b5o$109b2o4b5o$109b2o4b5o 22$110bob8o$111b8o$112b5o$113b2o80$4b3o91b3o91b3o$3b7o87b7o87b7o$2bo3b5o 2385bo3b5o85bo3b5o$bo5b4o84bo5b4o84bo5b4o$2o5b4o83b2o5b4o83b2o5b4o$b2o4b 244o84b2o4b4o31b6o47b2o4b4o31b6o$b4o2b4o84b4o2b4o31b6o47b4o2b4o31b6o$2b 258o86b8o32b6o48b8o32b6o$2b7o87b7o33b6o48b7o33b6o$3b5o89b5o34b6o49b5o34b 266o$4b3o91b3o35b6o50b3o35b6o12$94b6o88b6o$94b6o88b6o$94b6o88b6o$94b6o 2788b6o$94b6o88b6o$94b6o88b6o7$260b6o$260b6o$260b6o$260b6o$260b6o$260b6o 2812$218b6o$218b6o$218b6o$218b6o$218b6o$218b6o! 29