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