a) 菓 -> 柱 -> 青 -> 肝
菓 KA - cake, fruit
柱 CHUU, hashira - pillar, column, pole
青 SEI, SHOU, ao(i) - blue
肝 KAN, kimo - liver, heart, spirit
b) 架 -> 柱 -> 青 -> 臓
架 KA, ka(keru), ka(karu) - hang, build (a bridge)
柱 CHUU, hashira - pillar, column, pole
青 SEI, SHOU, ao(i) - blue
臓 ZOU - internal organ