Preferably, a numerical control unit for controlling {TAIL ~ the grinding machine} is programmed in {HEAD ~ the following manner} 
Preferably , a numerical control unit for controlling { TAIL ~ the grinding machine } is programmed in { HEAD ~ the following manner }
OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD