The plurality of {HEAD ~ distribution devices} and {TAIL ~ the plurality} of receiving devices are connected by a transmission line 
The plurality of { HEAD ~ distribution devices } and { TAIL ~ the plurality } of receiving devices are connected by a transmission line
OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH