2154. What characters can be added here so that each character contains a part of the previous character? a) 柔 -> _ -> _ -> 近 b) 姿 -> _ -> _ -> 坪

a) 柔 -> 林 -> 析 -> 近  

柔  JUU, NYUU, yawa(rakai) - soft

林  RIN, hayashi - woods

析  SEKI - divide, take apart, analyze

近  KIN, chika(i) - close, near

b) 姿 -> 如 -> 吐 -> 坪  

姿  SHI, sugata - figure, form, shape, appearance

如  JO, NYO - equal, like, as, as if

吐  TOU, ha(ku) - spew, vomit, give vent to

坪  tsubo - unit of area