In this manner, {HEAD ~ fair arbitration} is assured for {TAIL ~ other CPUs} contending for control of the system bus 
is assured for
In this manner , { HEAD ~ fair arbitration } is assured for { TAIL ~ other CPUs } contending for control of the system bus
OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH