In the following discussion, {HEAD ~ various systems} and methods are described to provide {TAIL ~ evaluation} of transmission networks 
are described to provide
In the following discussion , { HEAD ~ various systems } and methods are described to provide { TAIL ~ evaluation } of transmission networks
OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH REL REL REL REL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH