LOLCODE Error :(

Here is a simple code:

HAI 1.3
CAN HAS STDIO?
I HAS A VAR
VAR IS NOW A NUMBR
GIMMEH VAR
I HAS A B ITS PRODUKT OF 4 AN VAR
I HAS A C ITS SUM OF 1 AN B
VISIBLE C
KTHXBYE

I'm getting the error, 6: expected end of statement at: ITS

Can somebody explain whats the problem ??