{HEAD ~ Each modem} includes {TAIL ~ a transmitter section} for transmitting data and a receiver section for receiving data, and is of the discrete multitone type, i.e., the modem transmits data over a multiplicity of subchannels of limited bandwidth 
includes
{ HEAD ~ Each modem } includes { TAIL ~ a transmitter section } for transmitting data and a receiver section for receiving data , and is of the discrete multitone type , i.e. , the modem transmits data over a multiplicity of subchannels of limited bandwidth
HEAD HEAD HEAD HEAD HEAD HEAD REL 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 OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH