Chinese-like forms / Words JLPT 1
          2570 Mandarin
  だんだん 段々 dandan gradually, step by step song s2218 渐渐 jiànjiàn
  どんどん   dondon rapidly, steadily song s2218 匆匆 cōngcōng
2618 sa- left   zuŏ
    左側 sasoku left-hand side 2570 745  
  させつ 左折 sasetsu left turn    
    u- right   yòu
  うせつ 右折 usetsu right turn