The device for converting {HEAD ~ series} of {TAIL ~ A input data elements} to series of A output data elements comprises a memory means for containing these series of input and output data elements 
of
The device for converting { HEAD ~ series } of { TAIL ~ A input data elements } to series of A output data elements comprises a memory means for containing these series of input and output data elements
OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH