Pictograph of a flowing stream with droplets on either side. The most productive of the natural-element radicals — strong clue that a character involves liquid, rivers, washing, or wetness. Appears as 氵 (three drops) on the left of hundreds of characters: 河, 海, 江, 流, 洗, 油, 汗. The bottom variant 氺 sits under characters like 泰 and 黎.