The camera interface can be {HEAD ~ any} of {TAIL ~ the commercially available camera interfaces} that produce the necessary video acquisition control signals 
of
The camera interface can be { HEAD ~ any } of { TAIL ~ the commercially available camera interfaces } that produce the necessary video acquisition control signals
OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH