English is not easy

Beginner:
Three witches watch three Swatch watches. Which witch watches which swatch watch?

Intermediate:
Three switched witches watch three Swatch watch switches. Which switched witch watches which Swatch watch switch?

Advanced:
Three swiss witchbitches, which wished to be switched swiss witchbitches, wish to watch three swiss Swatch watch switches. Which swiss witchbitch which wishes to be a switched swiss witchbitch, wishes to watch which swiss Swatch watch switch?

engrish