The power and signal buses of the mesh system run in {HEAD ~ both vertical and horizontal directions} across {TAIL ~ the array} such that all the vertical buses lie in one metal layer, and all the horizontal buses lie in another metal layer 
across
The power and signal buses of the mesh system run in { HEAD ~ both vertical and horizontal directions } across { TAIL ~ the array } such that all the vertical buses lie in one metal layer , and all the horizontal buses lie in another metal layer
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH