Preferably {HEAD ~ said cutter} is linked to {TAIL ~ a rotatory actuator} to rotate said cutters 
is linked to
Preferably { HEAD ~ said cutter } is linked to { TAIL ~ a rotatory actuator } to rotate said cutters
OTH HEAD HEAD HEAD HEAD HEAD HEAD REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH