It says both sides of neck are worked at same time, using seperate yarn for each side. Maintain established pattern throughout.
Row 1-Work accross 26 sts, slip 21 sts onto st holder; with second yarn work accross 26sts each side
Row 2-Work accross to within 2 sts of neck edge, K2 tog; with second yarn, slip1 as if to knit, K1, PSSO, work accross: 25 sts each side
Row 3-Work accross to within 2 sts of neck edge, P2 tog; with second yarn, P2 tog, work accross: 24 sts each side
Row 4- Work accross: with second yarn, work accross. Bind of remaining sts