Like others said typical tuning for tenor ukes is GCEA - high or low-G of your choice.
One thing I would like to mention is that "tenor" strings are not necessarily used for tenor ukes.
As the tension is higher compared to that of soprano and concert, some ukes may not strong enough to hold tenor strings - sound board between sound hole and bridge might sink gradually to some extent.
As an FYI I know a guy who is using D'addario J65 for his all tenor ukes unless the strength of them look pretty good (thickness of sound board, placement of braces etc).
I haven't tried this though. I even don't know J65 is long enough for tenor ukes.
Cheers,
Terry