What measure to use for the cost between two neighboring devices, depends on {HEAD ~ the network} at {TAIL ~ hand} 
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What measure to use for the cost between two neighboring devices , depends on { HEAD ~ the network } at { TAIL ~ hand }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL