A plurality of flexible hinges couple {HEAD ~ the plurality} of substrates into {TAIL ~ a substantially flat two dimensional foldable assembly} 
into
A plurality of flexible hinges couple { HEAD ~ the plurality } of substrates into { TAIL ~ a substantially flat two dimensional foldable assembly }
OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL