A plurality of {HEAD ~ rigid cross beams} connect {TAIL ~ the anchor} ends, with the cross beams and the anchor ends all substantially coplanar 
A plurality of { HEAD ~ rigid cross beams } connect { TAIL ~ the anchor } ends , with the cross beams and the anchor ends all substantially coplanar
OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH