1287. What character can be added to both of these characters to give other characters? 其_ -> _屈

Answer:

其  shi, so - that

屈  KUTSU - bend, yield

Add 土:其+土 土+屈 土 基 堀

土  DO, tsuchi - earth, soil

基  KI, moto, motoi - basis, foundation

堀  hori - moat, canal, ditch