{HEAD ~ These additional types} of {TAIL ~ SIDs} can be used in various conventional manners to control access to resources 
of
{ HEAD ~ These additional types } of { TAIL ~ SIDs } can be used in various conventional manners to control access to resources
HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH