When the holder is in a cutting position, a cutter is moved to cut {HEAD ~ one or more notches} in {TAIL ~ the key blank} 
When the holder is in a cutting position , a cutter is moved to cut { HEAD ~ one or more notches } in { TAIL ~ the key blank }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL