Could someone tell me the proper conjugate of the Sen and Siz forms of Yemek in the imperative tense?

I think it´s ye/yiyin/yiyiniz and yeme/yemeyin/yemeyiniz but I saw something else online, so I want to make sure.

Thanks!

 From www.winmekmak.com

sen ye! Eat!

o yesin!

siz yiyiniz!

onlar yesinler!

sen yeme! Don´t eat!

o yemesin!

siz yemeyiniz!

onlar yemesinler!

Thanks! Just out of curiosity, when would the "o" and "onlar" forms be used? If it´s a command directed at someone, how can it be in the third person?

They are the ´let´ form ie-let him eat,let them eat.Also used in expressions such as kolay gelsin! ´let it come easy´ 

Others could probably explain it more thoroughly though.

Here is the correct link:

http://ipb.nu/winmekmak/

Here is an online conjugation tool (although I suggest winmekmak):

http://www.verbix.com/languages/turkish.shtml

Is there a "we" form, as in "let´s eat" or "let´s go"?

 Sorry!  I never checked and as I have it downloaded I never actually use the link and just assumed (wrongly) it was winmekmak.com.

 You cal use -elim or -alım with all verbs.

Yiyelim: let´s eat

Yemeyelim: let´s not eat.

Buranın yemeği iyi değil. Köfte yemeyelim. Pizza Hut´a gidip pizza yiyelim.