Shown with a cast-on count of 51 stitches.  

• Row 1 (RS): K1, k2tog, yo, k1, yo, ssk, k2tog, yo, k1, yo, ssk, k2tog, yo, k1, yo, ssk, k7, [yo, ssk] 3 times, k6, [k2tog, yo] 3 times, k4, [yo, ssk] twice, yo, k2 (52 sts).
• Rows 2 and 16: P52.
• Row 3: K1, k2tog, yo, k1, yo, ssk, k2tog, yo, k1, yo, ssk, k2tog, yo, k1, yo, ssk, k8, [yo, ssk] 3 times, k4, [k2tog, yo] 3 times, k6, [yo, ssk] twice, yo, k2 (53 sts).
• Rows 4 and 14: P53.
• Row 5: K1, k2tog, yo, k1, yo, ssk, k2tog, yo, k1, yo, ssk, k2tog, yo, k1, yo, ssk, k9, [yo, ssk] 3 times, k2, [k2tog, yo] 3 times, k8, [yo, ssk] twice, yo, k2 (54 sts).
• Rows 6 and 12: P54.
• Row 7: K1, k2tog, yo, k1, yo, ssk, k2tog, yo, k1, yo, ssk, k2tog, yo, k1, yo, ssk, k3, k2tog, [yo] twice, ssk, k3, [yo, ssk] 3 times, [k2tog, yo] 3 times, k3, k2tog, [yo] twice, ssk, k3, [yo, ssk] twice, yo, k2 (55 sts).
• Rows 8 and 10: P55.
• Row 9: K1, k2tog, yo, k1, yo, ssk, k2tog, yo, k1, yo, ssk, k2tog, yo, k1, yo, ssk, k9, [k2tog, yo] 3 times, k2, [yo, ssk] 3 times, k8, [k2tog, yo] 3 times, k2.
• Row 11: K1, k2tog, yo, k1, yo, ssk, k2tog, yo, k1, yo, ssk, k2tog, yo, k1, yo, ssk, k8, [k2tog, yo] 3 times, k4, [yo, ssk] 3 times, k6, [k2tog, yo] 3 times, k2tog, k1 (54 sts).
• Row 13: K1, k2tog, yo, k1, yo, ssk, k2tog, yo, k1, yo, ssk, k2tog, yo, k1, yo, ssk, k7, [k2tog, yo] 3 times, k6, [yo, ssk] 3 times, k4, [k2tog, yo] 3 times, k2tog, k1 (53 sts).
• Row 15: K1, k2tog, yo, k1, yo, ssk, k2tog, yo, k1, yo, ssk, k2tog, yo, k1, yo, ssk, k6, [k2tog, yo] 3 times, k8, [yo, ssk] 3 times, k2, [k2tog, yo] 3 times, k2tog, k1 (52 sts).
• Row 17: K1, k2tog, yo, k1, yo, ssk, k2tog, yo, k1, yo, ssk, k2tog, yo, k1, yo, ssk, k5, [k2tog, yo] 3 times, k3, k2tog, [yo] twice, ssk, k3, [yo, ssk] 3 times, [k2tog, yo] 3 times, k2tog, k1 (51 sts).
• Rows 18 and 20: P51.
• Row 19: K1, k2tog, yo, k1, yo, ssk, k2tog, yo, k1, yo, ssk, k2tog, yo, k1, yo, ssk, k6, [yo, ssk] 3 times, k8, [k2tog, yo] 3 times, k2, [yo, ssk] 3 times, k1.