Optionally, {HEAD ~ the abrasive compositions} also will contain {TAIL ~ at least one viscosity} modifying organic diluent 
contain
Optionally , { HEAD ~ the abrasive compositions } also will contain { TAIL ~ at least one viscosity } modifying organic diluent
OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH