The memory module may include a printed circuit board and {HEAD ~ a memory package} on {TAIL ~ the printed circuit board} 
The memory module may include a printed circuit board and { HEAD ~ a memory package } on { TAIL ~ the printed circuit board }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL