{TAIL ~ The manager computer} is further coupled to the number of {HEAD ~ UPS systems} via the computer network system 
{ TAIL ~ The manager computer } is further coupled to the number of { HEAD ~ UPS systems } via the computer network system
TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH