{HEAD ~ The number} of bits in each submask equates to {TAIL ~ the number} of exit ports in fabrics 602 and 604 
equates to
{ HEAD ~ The number } of bits in each submask equates to { TAIL ~ the number } of exit ports in fabrics 602 and 604
HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH