As such, {HEAD ~ intersection seam} 406 is separated from {TAIL ~ intersection seam} 405 by major face 402 
is separated from
As such , { HEAD ~ intersection seam } 406 is separated from { TAIL ~ intersection seam } 405 by major face 402
OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH