The gel is suitable for {HEAD ~ use} as {TAIL ~ a carrier} for medicaments and pesticides 
as
The gel is suitable for { HEAD ~ use } as { TAIL ~ a carrier } for medicaments and pesticides
OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH