The holder can be provided with a sheet of abrasive material in {HEAD ~ order} to permit {TAIL ~ surgical instruments} to be cleaned during the course of an operation 
to permit
The holder can be provided with a sheet of abrasive material in { HEAD ~ order } to permit { TAIL ~ surgical instruments } to be cleaned during the course of an operation
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH