By way of this, {TAIL ~ memory capacity} can be flexibly selected according to {HEAD ~ utilization conditions} 
By way of this , { TAIL ~ memory capacity } can be flexibly selected according to { HEAD ~ utilization conditions }
OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD