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