2132. What characters can be added here so that each character contains a part of the previous character? a) 翌 -> _ -> _ -> 嘱 b) 案 -> _ -> _ -> 販

a) 翌 -> 辛 -> 古 -> 嘱  

翌  YOKU - next, following

辛  SHIN, kara(i) - hot, spicy, trying

古  KO, furu(i) - old

嘱  SHOKU - request, entrust, commission

b) 案 -> 柱 -> 責 -> 販  

案  AN - plan, proposal

柱  CHUU, hashira - pillar, column, pole

責  SEKI, se(meru) - condemn, censure, torture

販  HAN - sell