Also, {HEAD ~ one or more cross} linking agents may be used in conjunction with one or more gelling agents in {TAIL ~ order} to cross link the gelling agent 
Also , { HEAD ~ one or more cross } linking agents may be used in conjunction with one or more gelling agents in { TAIL ~ order } to cross link the gelling agent
OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH