Electively, {HEAD ~ the solution} may be further combined with {TAIL ~ a plastizer} such as a plasticizing resin to produce a fluid solution of approximately 50% solids and 20 to 40 second viscosity  
combined with
Electively , { HEAD ~ the solution } may be further combined with { TAIL ~ a plastizer } such as a plasticizing resin to produce a fluid solution of approximately 50 % solids and 20 to 40 second viscosity
OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH