Eyelet Lace 50: Lattice

PATTERN
Cast on a multiple of 10 sts, +2.
Row 1 (RS): K3, *k2tog, yo, k3, repeat from * to last 4 sts, k2tog, yo, k2.
Rows 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24, 26, and 28: Purl.
Row 3: K2, *k2tog, yo, k3, repeat from *.
Row 5: K1, *k2tog, yo, k3, repeat from * to last st, k1.
Row 7: K5, *k2tog, yo, k1, yo, ssk, k5, repeat from * to last 7 sts, k2tog, yo, k1, yo, ssk, k2.
Row 9: K4, *k2tog, yo, k3, yo, ssk, k3, repeat from * to last 8 sts, k2tog, yo, k3, yo, ssk, k1.
Row 11: K3, *k2tog, yo, k5, yo, ssk, k1, repeat from * to last 9 sts, k2tog, yo, k7.
Row 13: K1, yo, sl1-k2tog-psso, yo, *k2, yo, ssk, k3, yo, sl1-k2tog-psso, yo, repeat from * to last 8 sts, k2, yo, ssk, k4.
Row 15: K2, *yo, ssk, k3, repeat from *.
Row 17: K3, *yo, ssk, k3, repeat from * to last 4 sts, yo, ssk, k2.
Row 19: K4, *yo, ssk, k3, repeat from * to last 3 sts, yo, ssk, k1.
Row 21: K2, *k2tog, yo, k1, yo, ssk, k5, repeat from *.
Row 23: K1, *k2tog, yo, k3, yo, ssk, k3, repeat from * to last st, k1.
Row 25: K7, *yo, ssk, k1, k2tog, yo, k5, repeat from * to last 5 sts, yo, ssk, k3.
Row 27: K4, k2tog, yo, k2, *yo, sl1-k2tog-psso, yo, k3, k2tog, yo, k2, repeat from * to last 4 sts, yo, sl1-k2tog-psso, yo, k1.
Repeat rows 1-28.