Here are some examples of sentences with alliteration:
1. Behind beliefs bare better bears.
2. The tiger trotted through the thicket.
3. Peter Piper picked a peck of pickled peppers.
4. Mary Macdonald married a man managed a mine.
5. She sells seashells shore.
6. The tiny terrier tossed ten tennis balls.
7. He heard a hummingbird hovering high.
8. Jack jumped just just just in time.
9. Blue birds build beautiful blueberry bushes.
10. Frances found a funny frog floating flat on a frog pond.