{HEAD ~ The data input} 120 thereto contain {TAIL ~ the pattern} which is intended to be used to preset the filter memory at both the transmitter and the receiver 
contain
{ HEAD ~ The data input } 120 thereto contain { TAIL ~ the pattern } which is intended to be used to preset the filter memory at both the transmitter and the receiver
HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH