{HEAD ~ The user roles} in the role database are available for {TAIL ~ use} by a plurality of users of the application 
are available for
{ HEAD ~ The user roles } in the role database are available for { TAIL ~ use } by a plurality of users of the application
HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH REL REL REL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH