Alternately, {HEAD ~ the ramp} 111 can be formed as {TAIL ~ part} of the rotatable member 40 
Alternately , { HEAD ~ the ramp } 111 can be formed as { TAIL ~ part } of the rotatable member 40
OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH REL REL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH