In {HEAD ~ an embodiment} of the invention, the technique provides {TAIL ~ linear spine interconnect routing} 
In { HEAD ~ an embodiment } of the invention , the technique provides { TAIL ~ linear spine interconnect routing }
OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL