The application means selects {TAIL ~ the desired packet data network identifiers} based on {HEAD ~ services} requested by applications 
The application means selects { TAIL ~ the desired packet data network identifiers } based on { HEAD ~ services } requested by applications
OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH HEAD HEAD HEAD HEAD HEAD OTH OTH OTH