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