{HEAD ~ A coherent set} of data and {TAIL ~ code} is under no circumstances output from the apparatus to the data system of lower secrecy and security level 
of
{ HEAD ~ A coherent set } of data and { TAIL ~ code } is under no circumstances output from the apparatus to the data system of lower secrecy and security level
HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL OTH OTH TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH