help with routes[]

[eluser]chefnelone[/eluser]
Hello
I'm trying to make a route rule. Something like:

Code:

$route[':any/services'] = 'index/services';

which works fine with:

Code:

http://192.1/ci/something-1/services

but the problem is that the rule applies also when there are 2 segments before /services. Then it applies whith:

Code:

http://192.1/ci/something-1/something-2/services

I need the rule to apply only when there is ONLY 1 segment before /services but not when there are 2 segments before /services.
The segment before /services must be :any though

thanks