Stupid - or at least silly - question

In the Evolvere patter on Row 3 (and following) in the body portion of the pattern it uses the instruction "work in patt..." I'm simply not sure what this means. Since it is an odd row and the odd rows in Row 1 of the body state "(p3, k1tbl) 30 times" is this what I'm to do in the "work in patt" portion - and then in Row 4 would I do the "(wyf), p2tog, k1, p1tbl*, *k3, ptbl)" portion.

If someone could simply spell out what the "work in patt" means for me that wold help tremendously!

Thanks,
Rick