Problem in regular expression for matching

[Dawood Mohammed]

Hi,
For the example below, can I write a regular expression to get key, value pairs.

example: ((abc def) (ghi jkl) (a ((b c) (d e))) (mno pqr) (a ((abc def))))

in the above example
abc is key & def is value
ghi is key & jkl is value
a is key & ((b c) (d e)) is value
and so on.

can anybody pls help me in resolving this problem using regular expressions...

Thanks in advance
[ September 06, 2005: Message edited by: Michael Ernest ]