2127. What characters can be added here so that each character contains a part of the previous character? a) 翌 -> _ -> _ -> 臓 b) 動 -> _ -> _ -> 坪

a) 翌 -> 音 -> 明 -> 臓  

翌  YOKU - next, following

音  ON, IN, oto, ne - sound

明  MEI, MYOU, aka(rui), a(keru) - bright

臓  ZOU - internal organ

b) 動 -> 加 -> 吐 -> 坪  

動  DOU , ugo(ku) - move

加  KA, kuwa(eru), kuwa(waru) - add, append, join, take part

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

坪  tsubo - unit of area