Up down up down
Up, down, up, down...
Up and down
Up↑ Up↑, Down↓ Down↓
Up and down :)
Down and Up
Up and down
Up and down :)
Bouncing up and down
Bouncing up and down
Up-and-down
Up and Down
Up and down
Bouncing Up And Down
Up and Down
Up Down, Up Down
Up and Down
up and down
Up and down
Up and down