{HEAD ~ The amount} of viscosity reducing agent often ranges from about 1 percent to about 10 percent, {TAIL ~ preferably about 2 percent} to about 6 percent, based on the total weight of the formulation 
often ranges from
{ HEAD ~ The amount } of viscosity reducing agent often ranges from about 1 percent to about 10 percent , { TAIL ~ preferably about 2 percent } to about 6 percent , based on the total weight of the formulation
HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH REL REL REL OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH