For example, {TAIL ~ the client} with his communications system is traveling by {HEAD ~ train} and can listen to music 
For example , { TAIL ~ the client } with his communications system is traveling by { HEAD ~ train } and can listen to music
OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH