Shown with a cast-on count of 67 stitches.  

• Row 1 (RS): K9, *[yo, ssk] twice, k3, yo, k3tog tbl, yo, k1, yo, k3tog tbl, yo, k3, [k2tog, yo] twice, k7, repeat from * to last 2 sts, k2.
• Rows 2, 4, 6, 8, 10, 12, 14, and 16: Knit.
• Row 3: K10, *[yo, ssk] twice, k4, yo, k3tog tbl, yo, k4, [k2tog, yo] twice, k9, repeat from * to last st, k1.
• Row 5: K3, k2tog, yo, k1, yo, ssk, k3, *[yo, ssk] twice, k9, [k2tog, yo] twice, k3, k2tog, yo, k1, yo, ssk, k3, repeat from *.
• Row 7: K2, k2tog, yo, k3, yo, ssk, *k3, [yo, ssk] twice, k7, [k2tog, yo] twice, k3, k2tog, yo, k3, yo, ssk, repeat from * to last 2 sts, k2.
• Row 9: K4, yo, k3tog tbl, yo, *k3, [k2tog, yo] twice, k11, [yo, ssk] twice, k3, yo, k3tog tbl, yo, repeat from * to last 4 sts, k4.
• Row 11: K9, *[k2tog, yo] twice, k5, yo, k3tog tbl, yo, k5, [yo, ssk] twice, k7, repeat from * to last 2 sts, k2.
• Row 13: K8, *[k2tog, yo] twice, k4, yo, k3tog tbl, yo, k1, yo, k3tog tbl, yo, k4, [yo, ssk] twice, k5, repeat from * to last 3 sts, k3.
• Row 15: K7, *[k2tog, yo] twice, k3, [yo, k3tog tbl, yo, k1] twice, yo, k3tog tbl, yo, k3, [yo, ssk] twice, k3, repeat from * to last 4 sts, k4.