2541. What character can be added to both of these characters to give other characters? 手_ -> _垂

手  SHU, te - hand

垂  SUI, ta(reru), ta(rasu) - hang down, dangle, drip

Add 目:手+目 目+垂  

目  MOKU, me - eye

看  KAN - see

睡  SUI - sleep