{HEAD ~ The coded syntax element} is replaced with another coded value if the modified value generates {TAIL ~ the same decoding variables} as the original value would have generated 
{ HEAD ~ The coded syntax element } is replaced with another coded value if the modified value generates { TAIL ~ the same decoding variables } as the original value would have generated
HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH