{HEAD ~ The present invention} overcomes {TAIL ~ the disadvantages} of known trellis codes generated via design rules having very simple structure 
{ HEAD ~ The present invention } overcomes { TAIL ~ the disadvantages } of known trellis codes generated via design rules having very simple structure
HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH