Agua de limón

Formation: Students stand in a circle holding hands.

During the song, they walk to the right. (Optional: Repeat the song, walking to the left.) At the end of the song, the leader calls out a number, such as “Three!” All students must form groups of three. Those students who do not find a group are “out.” (source)

Optional: Always form groups of two, and the one who is left without a group is the leader for the next turn.