#MCell 2.0
#GAME Generations
#RULE 345/2/4
#BOARD 200x200
#SPEED 0
#WRAP 0
#D This construction produces guns of all periods from 25 onwards.
#D Simply make the path length a multiple of the desired period,
#D and then insert the appropriate number of bullets into the path.
#D As shown the path length must be odd - but even path lengths
#D can be obtained by replacing one of the reflectors with another
#D duplicator.
#D 
#D The example shown is the minimum period of 25,
#D there being five bullets in a path of length 125.
#D 
#D Stephen Silver, April 1999
#L 6.A..A.C$5.6AB$4.AA3.A.A$3.AA4.A$..AA5.AA$3.A5.A21.CBA$3.A5.A21.CBA$..
#L 9A28.A$3.A..A..A28.3A$3.ABA..CBA25.A.A.AA$..CC31.6A$36.A..A3$..CBA$..A
#L ..A$.6A28.A$AA.A.A28.A.BC$.3A.BA26.3A$..A.C29.A$13.ABC18.3A.C$13.ABC
#L 17.AA.AACB$34.3A.BA$35.A.A