Various arrangements of pinned or cantilevered cards may act as a pusher, bender or other motive actuator, and {HEAD ~ structures} such as powered bellows may be formed directly by folding {TAIL ~ one or more suitably patterned cards} 
formed directly by folding
Various arrangements of pinned or cantilevered cards may act as a pusher , bender or other motive actuator , and { HEAD ~ structures } such as powered bellows may be formed directly by folding { TAIL ~ one or more suitably patterned cards }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH REL REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL