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