tokens: ['The', 'state', 'GMMREGISTERED', 'is', 'entered', 'at', 'the', 'UE', 'when', 'the', 'initial', 'registration', 'procedure', 'is', 'performed', 'by', 'the', 'UE', 'see', 'subclause', '', 'In', 'state', 'GMMREGISTERED', 'the', 'UE', 'shall', 'behave', 'according', 'to', 'the', 'substate', 'as', 'explained', 'in', 'subclause', '']