{HEAD ~ The spent water} can be concentrated to a caffeine content of from about 7 to about 30% by {TAIL ~ weight} 
{ HEAD ~ The spent water } can be concentrated to a caffeine content of from about 7 to about 30 % by { TAIL ~ weight }
HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL