2602. What characters can be added here so that each character contains a part of the previous character? a) 婆 -> _ -> _ -> 睡 b) 妄 -> _ -> _ -> 賜

a) 婆 -> 妙 -> 省 -> 睡  

婆  BA - old woman

妙  MYOU - strange, odd, adroit, mystery

省  SEI, SHOU, kaerimiru, habu(ku) - ministry, reflect, omit

睡  SUI - sleep

b) 妄 -> 如 -> 員 -> 賜  

妄  MOU, BOU - without reason, without authority

如  JO, NYO - equal, like, as, as if

員  IN - member

賜  SHI, tamawa(ru) - grant, bestow, confer