Their extremely rudimentary wall paintings use a very basic graphic vocabulary: a circle, a triangle and a square. Their paintings were monosyllabic. The circle and triangle come from their observation of nature, the circle representing the sun and the moon, the triangle derived from mountains and pointed trees. Only the square seems to obey a different logic and seems to be a human invention, indicating a sacred enclosure or a piece of land. So the central motive in each ritual painting is the square, known as the "chauk" or "chaukat", mostly of two types: "Devchauk" and "Lagnachauk". Inside a "Devchauk", we find Palaghata, the mother goddess, symbolizing fertility. Significantly, male gods are unusual among the Warli and are frequently related to spirits which have taken human shape. The central motive in these ritual paintings is surrounded by scenes portraying hunting, fishing and farming, festivals and dances, trees and animals. Human and animal bodies are represented by two triangles joined at the tip; the upper triangle depicts the trunk and the lower triangle the pelvis. Their precarious equilibrium symbolizes the balance of the universe, and of the couple, and has the practical and amusing advantage of animating the bodies.