adjusting a delay provided by {TAIL ~ each} of {HEAD ~ the delay stages} to attempt to equalize a first time difference and a second time difference, 
adjusting a delay provided by { TAIL ~ each } of { HEAD ~ the delay stages } to attempt to equalize a first time difference and a second time difference ,
OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH