{HEAD ~ The manager computer} is further coupled to {TAIL ~ the number} of uninterruptible power supply systems via the computer network 
is coupled to
{ HEAD ~ The manager computer } is further coupled to { TAIL ~ the number } of uninterruptible power supply systems via the computer network
HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL OTH REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH