Thus, {TAIL ~ unnecessary delays} are minimized in {HEAD ~ systems} where the block size of the data is variable 
Thus , { TAIL ~ unnecessary delays } are minimized in { HEAD ~ systems } where the block size of the data is variable
OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH