2314. What characters can be added here so that each character contains a part of the previous character? a) 篤 -> _ -> _ -> 緒 b) 架 -> _ -> _ -> 味

a) 篤 -> 駐 -> 素 -> 緒  

篤  TOKU - serious, cordial

駐  CHUU - stop, reside

素  SO, SU - element, naked, simple

緒  SHO, CHO, o(chiru) - beginning, cord, strap

b) 架 -> 杯 -> 否 -> 味  

架  KA, ka(keru), ka(karu) - hang, build (a bridge)

杯  HAI, sakazuki - wine cup

否  HI, ina - no, negative

味  MI, aji , aji(wau) - taste