Each hidden layer includes nodes in which the output of the node is fed back to {HEAD ~ that node} as {TAIL ~ an input} with a unit delay occurring in the feedback path  
as
Each hidden layer includes nodes in which the output of the node is fed back to { HEAD ~ that node } as { TAIL ~ an input } with a unit delay occurring in the feedback path
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH