The central joint member is also connected to another arm having {TAIL ~ one end} connected to a central joint member and its other end connected to {HEAD ~ a head joint member} 
The central joint member is also connected to another arm having { TAIL ~ one end } connected to a central joint member and its other end connected to { HEAD ~ a head joint member }
OTH 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 HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD