Lemon or Lime????

Has anyone tried to mix one Tablespoon of lemon juice and one Tablespoon of lime juice?
Is this acceptable for the master cleanse? Just wanted to know because I am ready for a new taste. I'm on Day 3 and need a change already. Can you drink 1 glass of lemon mixture then drink one glass of lime mixture or do they all have to be lemon or lime?
I'm just trying to survive.

Thanks,

Ggirl