Generally {TAIL ~ the concentrate} may be entrained in {HEAD ~ a product} or introduced directly into the environment of use 
Generally { TAIL ~ the concentrate } may be entrained in { HEAD ~ a product } or introduced directly into the environment of use
OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH