Shown with a cast-on count of 30 stitches.  

• Rows 1, 3, 5, 7, and 31 (RS): Knit.
• Rows 2 and 6: K4, *k2tog, yo, repeat from * to last 4 sts, k4.
• Row 4: K4, *yo, k2tog, repeat from * to last 4 sts, k4.
• Row 8: K3, k2tog, yo, k21, yo, k2tog, k2.
• Row 9: K1, k2tog, yo, k23, yo, k2tog, k2.
• Row 10: K1, k2tog, yo, k11, yo, sl1-k2tog-psso, yo, k11, yo, k2tog.
• Row 11: K2, yo, k2, k2tog, k6, yo, k2tog, k1, k2tog, yo, k6, k2tog, k2, yo, k3.
• Row 12: K4, yo, k2, k2tog, k4, yo, k2tog, yo, sl1-k2tog-psso, yo, k2tog, yo, k4, k2tog, k2, yo, k3.
• Row 13: K4, yo, k2, k2tog, k2, [yo, k2tog] twice, k1, [k2tog, yo] twice, k2, k2tog, k2, yo, k5.
• Row 14: K5, yo, k1, yo, k2, [k2tog, yo] 3 times, sl1-k2tog-psso, [yo, k2tog] 3 times, k2, yo, k1, yo, k4 (32 sts).
• Row 15: K2, k2tog, yo, k3, yo, k2, [k2tog, yo] twice, k2tog, k1, [k2tog, yo] twice, k2tog, k2, yo, k3, yo, k2tog, k3.
• Row 16: K2, k2tog, yo, k5, yo, k2, [k2tog, yo] twice, sl1-k2tog-psso, [yo, k2tog] twice, k2, yo, k5, yo, k2tog, k1.
• Row 17: K1, k2tog, yo, k3, k2tog, yo, k1, yo, k2, k2tog, yo, k2tog, k1, k2tog, yo, k2tog, k2, yo, k1, yo, k2tog, k4, yo, k2tog, k1.
• Row 18: K6, k2tog, yo, k3, yo, k2, k2tog, yo, sl1-k2tog-psso, yo, k2tog, k2, yo, k3, yo, k2tog, k5.
• Row 19: K4, k2tog, yo, k5, yo, k2, k2tog, k1, k2tog, k2, yo, k5, yo, k2tog, k5.
• Row 20: K10, k2tog, yo, k1, yo, k2, sl1-k2tog-psso, k2, yo, k1, yo, k2tog, k9.
• Row 21: K8, k2tog, yo, k3, yo, k1, sl1-k2tog-psso, k1, yo, k3, yo, k2tog, k9.
• Row 22: K8, k2tog, yo, k5, yo, sl1-k2tog-psso, yo, k5, yo, k2tog, k7.
• Row 23: K12, k2tog, yo, k3, yo, k2tog, k13.
• Row 24: K12, k2tog, yo, k5, yo, k2tog, k11.
• Row 25: K10, k2tog, yo, k7, yo, k2tog, k11.
• Row 26: K13, yo, k2tog, k3, k2tog, yo, k12.
• Row 27: K13, yo, k2tog, k1, k2tog, yo, k14.
• Row 28: K15, yo, sl1-k2tog-psso, yo, k14.
• Row 29: K14, sl1-k2tog-psso, k15 (30 sts).
• Row 30: Knit.