{TAIL ~ Guard bands} having specified levels are inserted between {HEAD ~ the blocks}, thereby assuring more accurate and fine synchronization than the known WBS art, and hence, a very clear reproduced picture 
{ TAIL ~ Guard bands } having specified levels are inserted between { HEAD ~ the blocks } , thereby assuring more accurate and fine synchronization than the known WBS art , and hence , a very clear reproduced picture
TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH