From Lace Stitch Pattern section:

Row 1(RS): K1, *yo, sl1, K1, psso, K7, K2tog, yo, K1; rep from * to end.

Row 3:K2, yo, sl1, K1, psso, K5, *K2tog, yo, K3, yo, sl1, K1, psso, K5; rep from * to last 4 sts, K2tog, yo, K2.

Row 5:K3, yo, sl1, K1, psso, K3, *K2tog, yo, K5, yo, sl1, K1, psso, K3; rep from * to last 5 sts, K2tog, yo, K3.

Row 7: *K1, K2tog, yo, K1, yo, sl1, K1, psso; rep from * to last st, K1.

Row 9: K2tog, yo, K3, *yo, sl1, K2tog, psso, yo, K3; rep from * to last 2 sts, yo, sl1, K1, psso.

Row 11: K4, K2tog, yo, K1, yo, sl1, K1, psso, *K7, K2tog, yo, K1, yo, sl1, K1, psso; rep from * to last 4 sts, K4.

Row 13: K3, K2tog, yo, K3, yo, sl1, K1, psso, *K5, K2tog, yo, K3, yo, sl1, K1, psso; rep from * to last 3 sts; K3.

Row 15: K2, K2tog, yo, K5, yo, sl1, K1, psso, *K3, K2tog, yo, K5, yo, sl1, K1, psso; rep from * to last 2 sts, K2.