Shown with a cast-on count of 72 stitches.  

• Row 1 (RS): K1, [k2tog, yo] twice, k5, yo, ssk, *k2tog, yo, k5, [yo, ssk] twice, k2, [k2tog, yo] twice, k5, yo, ssk, repeat from * to last 12 sts, k2tog, yo, k5, [yo, ssk] twice, k1.
• Rows 2, 6, 8, and 12: Purl.
• Row 3: K2tog, yo, [k2tog] twice, [yo, k2tog] twice, [yo] twice, k2tog, *[[yo] twice, ssk] twice, yo, ssk, yo, [ssk] twice, yo, ssk, k2tog, yo, [k2tog] twice, [yo, k2tog] twice, [yo] twice, k2tog, repeat from * to last 12 sts, [[yo] twice, ssk] twice, yo, ssk, yo, [ssk] twice, yo, ssk.
• Row 4: P8, k1, p1, p1, k1, p1, *p1, k1, p1, p16, k1, p1, p1, k1, p1, repeat from * to last 11 sts, p1, k1, p1, p8.
• Row 5: K1, k2tog, k4, yo, k5, *k5, yo, k4, ssk, k2, k2tog, k4, yo, k5, repeat from * to last 12 sts, k5, yo, k4, ssk, k1.
• Row 7: K2tog, yo, k5, [yo, ssk] twice, k1, *k1, k2tog, yo, [k2tog, yo, k5, yo, ssk] twice, yo, ssk, k1, repeat from * to last 12 sts, k1, [k2tog, yo] twice, k5, yo, ssk.
• Row 9: Yo, ssk, [yo] twice, [ssk, yo] twice, [ssk] twice, yo, ssk, *k2tog, yo, [k2tog] twice, [yo, k2tog] twice, [yo] twice, k2tog, [[yo] twice, ssk] twice, yo, ssk, yo, [ssk] twice, yo, ssk, repeat from * to last 12 sts, k2tog, yo, [k2tog] twice, [yo, k2tog] twice, [yo] twice, k2tog, yo.
• Row 10: P2, k1, p1, p8, *p8, [k1, p1, p1] twice, k1, p1, p8, repeat from * to last 12 sts, p8, k1, p1, p2.
• Row 11: K5, yo, k4, ssk, k1, *k1, k2tog, k4, yo, k10, yo, k4, ssk, k1, repeat from * to last 12 sts, k1, k2tog, k4, yo, k5.