{HEAD ~ The ends} of the pin are supported by {TAIL ~ the casings} through the snap rings 
are supported by
{ HEAD ~ The ends } of the pin are supported by { TAIL ~ the casings } through the snap rings
HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH