{HEAD ~ The eleventh FF} is driven by {TAIL ~ the output signal} of the first programmable delay 
is driven by
{ HEAD ~ The eleventh FF } is driven by { TAIL ~ the output signal } of the first programmable delay
HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH