Sorry, didn't realize the ambiguity in my question. What I am trying to do is check the syntax of tnsnames.ora entries. This file contains information about how to connect to an oracle database.

The code: AddressTCP : Community(?) ProtocolTCP Host Port defines the particular order which the entry must follow for it to match. BUT that is not the action I am trying to achieve. The entry could come in any order so I would need to include the following to match every possible order.

AddressTCP : Community(?) ProtocolTCP Host Port
AddressTCP : Community(?) ProtocolTCP Port Host
AddressTCP : Community(?) Host ProtocolTCP Port 
AddressTCP : Community(?) Port ProtocolTCP Host
AddressTCP : Community(?) Host ProtocolTCP Port
AddressTCP : Community(?) Host Port ProtocolTCP 
AddressTCP : Community(?) Port Host ProtocolTCP
.... Would include every combination of each of these four fields.
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I picked AddressTCP as an example for the question but most of the fields on the parser could have this problem. All of a sudden this problem becomes unmanagle.Thanks for the help so far.

Here is a sample TNSNAMES.ORA entry

PRDSAP01 = 
  (DESCRIPTION =
    (ADDRESS_LIST =
      (ADDRESS = (PROTOCOL = TCP)(HOST = mercury.empire.com)(PORT = 15
+21))
    )
    (CONNECT_DATA = 
      (SERVICE_NAME = PRDSAP01)
    )
  )
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