{HEAD ~ Copolymers} having {TAIL ~ the following compositions} may also be hydrogenated according the present invention: 
{ HEAD ~ Copolymers } having { TAIL ~ the following compositions } may also be hydrogenated according the present invention :
HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH