{HEAD ~ A typical single color preparation} of nanoparticles has {TAIL ~ crystals} that are preferably of substantially identical size and shape 
has
{ HEAD ~ A typical single color preparation } of nanoparticles has { TAIL ~ crystals } that are preferably of substantially identical size and shape
HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH REL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH