The four main characters each represent and use different elements.

The first possibility is that these four colors represent different elements of nature.

The songs represent the five elements of wind, water, fire, sky and Earth.

They represent the fundamental elements of the universe: air, water, earth, and fire.

The four horses represent the classical elements of earth, air, fire, and water.

The three main characters represent different elements of the protagonist.

These objects represent, rather than accurately depict, elements of her world.

Items in design notes represent the programmed elements of a database.

B and T represent different elements in different members of the group.

The finds represent at least eleven individuals and most elements of the skeleton.