Up and down
Up↑ Up↑, Down↓ Down↓
Smooth up and down
Up and Down
Up and down
Up and Down
Up and down
up and down
Up and Down
Up And Down
up down up down up
Up and Down
Up-and-down
Up and down
Bouncing up and down
Up and Down
Sliding up and down
Up. Down. And repeat.
Up, Down, Up, Down, Up, Down, Up...
Up and Down
