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