What radical can be added to the "preface"

You can add "Lu" (by the right ear)

You can add "Fu" (two drops of water).

You can add "spoon" (next to your hand)

You can add "page" (next to the word "page").

You can add "rice" (grass prefix)

Neighbor: [Lin]? neighbour

[lěng] cold

Carry: [lρn]? pick up

[lǐng] collar

Ling: Poria cocos