Preferably, all requester identifiers for {TAIL ~ a single requester} are not provided in {HEAD ~ a contiguous clump} within a given priority vector 
Preferably , all requester identifiers for { TAIL ~ a single requester } are not provided in { HEAD ~ a contiguous clump } within a given priority vector
OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH