The matrix arrangement is embodied, for example, symmetrical in {HEAD ~ reference} to {TAIL ~ a horizontal and vertical 0° axis} 
to
The matrix arrangement is embodied , for example , symmetrical in { HEAD ~ reference } to { TAIL ~ a horizontal and vertical 0 ° axis }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL