The device includes {HEAD ~ a first subset} of {TAIL ~ light modulators} and a second subset of light modulators 
of
The device includes { HEAD ~ a first subset } of { TAIL ~ light modulators } and a second subset of light modulators
OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH