The end conductive segments at {TAIL ~ each polygon vertex} in at least one inner row are joined in {HEAD ~ the inner row} 
The end conductive segments at { TAIL ~ each polygon vertex } in at least one inner row are joined in { HEAD ~ the inner row }
OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD