The pattern I’m working on says:
(RS): Work in St st to last 5 sts, ssk, work 3 sts in Seed st.
(WS): Slip 1 st, work 2 sts in Seed st, purl to end
Repeat decs 16 times at neck edge, alternating every third and fourth rows. Dec will be on both RS and WS rows.
I understand how to do the RS and WS stitches, but I don’t understand the part about alternating every third and fourth rows.