943. What characters can be added here so that each character contains a part of the previous character? 炎 -> _ -> _ -> 脚

Answer:

炎 -> 炉 -> 肩 -> 脚

炎  EN, honou - flame

炉  RO - furnace, hearth

肩  KEN, kata - shoulder

脚  KYAKU, KYA, ashi - leg