1) A three-toed tree toad loved a two-toed he-toad that lived in a too-tall tree.
2) Which witch wishes to switch a witch wristwatch for a Swiss wristwatch?
3) How much wood would a woodchuck chuck if a woodchuck could chuck wood?

4) I thought a thought.
But the thought I thought wasn't the thought
I thought I thought.

5) While we were walking, we were watching window washers
wash Washington's windows with warm washing water.