Connections between the packages themselves, and between {TAIL ~ the packages} and stack connecting pads, are made on the faces of {HEAD ~ the stack} 
Connections between the packages themselves , and between { TAIL ~ the packages } and stack connecting pads , are made on the faces of { HEAD ~ the stack }
OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD