decoding the encoded region in accordance with {TAIL ~ the skip block designation} using {HEAD ~ a processor}, wherein: 
decoding the encoded region in accordance with { TAIL ~ the skip block designation } using { HEAD ~ a processor } , wherein :
OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH