{TAIL ~ A package identifier} for a package from which an application is installed on {HEAD ~ a computing device} is obtained 
{ TAIL ~ A package identifier } for a package from which an application is installed on { HEAD ~ a computing device } is obtained
TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH