Licks their food so no one wants it: 

Kai, Sehun, Tao

Doesn't want the licked food:

Xiumin, Kris, Luhan

Still wants the licked food:

Chanyeol, Chen

Kills those who doesn't give:

Kyungsoo

Didn't know he ate the licked food:

Lay, Baekhyun

Bought his own secretly:

Suho