The handset will constantly search for signals from other adjacent user groups which are {HEAD ~ members} of the total system but outside {TAIL ~ his present cell} 
The handset will constantly search for signals from other adjacent user groups which are { HEAD ~ members } of the total system but outside { TAIL ~ his present cell }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL