{HEAD ~ The random copolymers} have {TAIL ~ amino acids alanine}, lysine and one or more of the hydrophobic amino acids valine, phenylalanine, tryptophan and tyrosine 
{ HEAD ~ The random copolymers } have { TAIL ~ amino acids alanine } , lysine and one or more of the hydrophobic amino acids valine , phenylalanine , tryptophan and tyrosine
HEAD HEAD HEAD HEAD HEAD HEAD HEAD 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