Apertures within {TAIL ~ each segmentation} are ordered by minimizing the total leaf movement between sets of aperture shapes corresponding to {HEAD ~ adjacent delivery angles} 
Apertures within { TAIL ~ each segmentation } are ordered by minimizing the total leaf movement between sets of aperture shapes corresponding to { HEAD ~ adjacent delivery angles }
OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD