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