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