2706. What character can be added to both of these characters to give other characters? 矛_ -> _兆

矛  MU, hoko - halberd, spear

兆  CHOU, kiza(shi), kiza(su) - sign, indication, symptom, sprout

Add 木:矛+木 木+兆   

木  MOKU, BOKU, ki - tree

柔  JUU, NYUU, yawa(rakai) - soft

桃  TOU, momo - peach