{HEAD ~ The output} of vector adder 80, labeled RESULT, provides a data input to {TAIL ~ WT PORT1} 
{ HEAD ~ The output } of vector adder 80 , labeled RESULT , provides a data input to { TAIL ~ WT PORT1 }
HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL