{HEAD ~ An alkyl methacrylate} , or a combination of alkyl methacrylates, is {TAIL ~ a suitable second comonomer} 
{ HEAD ~ An alkyl methacrylate } , or a combination of alkyl methacrylates , is { TAIL ~ a suitable second comonomer }
HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL