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