{HEAD ~ The various movements} of the array may be reconstructed to determine {TAIL ~ a net two or three dimensional translation} 
reconstructed to determine
{ HEAD ~ The various movements } of the array may be reconstructed to determine { TAIL ~ a net two or three dimensional translation }
HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL