Answer:
a) 姿 -> 妙 -> 省 -> 眺
姿 SHI, sugata - figure, form, shape, appearance
妙 MYOU - strange, odd, adroit, mystery
省 SEI, SHOU, kaerimiru, habu(ku) - ministry, reflect, omit
眺 CHOU, naga(meru) - look at, watch, gaze
b) 化 -> 旨 -> 明 -> 脚
化 KA, KE, ba(keru) - transform
旨 SHI, mune - purport, content, instruction
明 MEI, MYOU, aka(rui), a(keru) - bright
脚 KYAKU, KYA, ashi - leg