{HEAD ~ The encoded data} corresponding to {TAIL ~ the plurality} of first blocks is combined via a multiplexor and output from the encoding apparatus as a data stream 
corresponding to
{ HEAD ~ The encoded data } corresponding to { TAIL ~ the plurality } of first blocks is combined via a multiplexor and output from the encoding apparatus as a data stream
HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH