What does k2(3,3,3) mean?

Sorry if this is a dumb question, but I’m just a little confused. I’m trying to knit someone a pair of slippers for their birthday and I’m kinda new at this.
Here is what the instructions say, and I dont know if its telling me to just knit six or knit 2 and then do something else. Help! Or does it mean knit two of the stitches together in one move three times???


It is for different sizes. Depending on the size you are knitting you are either supposed to do K2 or K3.

Oh! So, I’m supposed to just knit 3 if it’s a bigger size? So, K3???

Yes, that is what it means.