Upon detecting {HEAD ~ user selection} of an item in the list, contact information is displayed for a respective caller corresponding to {TAIL ~ the user selected item} 
Upon detecting { HEAD ~ user selection } of an item in the list , contact information is displayed for a respective caller corresponding to { TAIL ~ the user selected item }
OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL