{HEAD ~ A first end} 6 of the steering column 1 may be connected to {TAIL ~ a steering wheel}  
{ HEAD ~ A first end } 6 of the steering column 1 may be connected to { TAIL ~ a steering wheel }
HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH