The second on disc position is updated into {HEAD ~ substantial coincidence} with {TAIL ~ an outermost position} within the second data recorded region 
with
The second on disc position is updated into { HEAD ~ substantial coincidence } with { TAIL ~ an outermost position } within the second data recorded region
OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH