{HEAD ~ Other monomers} may be used as {TAIL ~ the second comonomer}, that achieve the thermal and toughness characteristics desired for the modeling system in which the alkali soluble support material B will be used 
used as
{ HEAD ~ Other monomers } may be used as { TAIL ~ the second comonomer } , that achieve the thermal and toughness characteristics desired for the modeling system in which the alkali soluble support material B will be used
HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH