monitoring {HEAD ~ the user actions} to identify patterns of media content use from {TAIL ~ the user actions} 
monitoring { HEAD ~ the user actions } to identify patterns of media content use from { TAIL ~ the user actions }
OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL