The other end of upper arm 18 is connected to {TAIL ~ one part} 20a of a head joint 20 while the other part 20b of the head joint 20 is connected to {HEAD ~ a light element} 22 
The other end of upper arm 18 is connected to { TAIL ~ one part } 20a of a head joint 20 while the other part 20b of the head joint 20 is connected to { HEAD ~ a light element } 22
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH