The extractable material is removed by first dissolving it in {TAIL ~ a liquid} which is not a solvent for the matrix forming material to form {HEAD ~ a solution} 
The extractable material is removed by first dissolving it in { TAIL ~ a liquid } which is not a solvent for the matrix forming material to form { HEAD ~ a solution }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD