 It consists of four actors dressed in robes, hunched and silently walking around and diagonally across a square stage in fixed patterns, alternately entering and exiting.Each actor wears a distinct colored robe (white, red, blue, yellow), and is accompanied by a distinct percussion instrument ("leitmotif").The actors walk in sync (except when entering or exiting), always on one of four rotationally symmetric paths (e.g., when one actor is at a corner, so are all others; when one actor crosses the stage, all do so together, etc.