About the periphery of each pad grid array 11 is {HEAD ~ a plurality} of side pads 13 and {TAIL ~ corner pads} 14 
of
About the periphery of each pad grid array 11 is { HEAD ~ a plurality } of side pads 13 and { TAIL ~ corner pads } 14
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH