A computer network diagnostic tool allows a user of {HEAD ~ a computer} coupled to {TAIL ~ a computer network} to perform network diagnostics 
A computer network diagnostic tool allows a user of { HEAD ~ a computer } coupled to { TAIL ~ a computer network } to perform network diagnostics
OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH