a distributed digital communication system within {HEAD ~ each} of {TAIL ~ said slave and master subsystems}, each including a supervisor processor, 
of
a distributed digital communication system within { HEAD ~ each } of { TAIL ~ said slave and master subsystems } , each including a supervisor processor ,
OTH 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