Shown with a cast-on count of 36 stitches.  

• Row 1 (RS): Sl1 wyib, k2, yo, k5, k20, k8 (37 sts).
• Row 2: Sl1 wyif, k2, yo, k5, p20, k9 (38 sts).
• Row 3: Sl1 wyib, k2, yo, k6, k3, yo, k2tog, k4, yo, k2tog, k4, yo, k2tog, k3, k9 (39 sts).
• Row 4: Sl1 wyif, k2, yo, k6, p20, k10 (40 sts).
• Row 5: *, Repeat from * to last 22 sts, sl1 wyib, k2, yo, k7, *, repeat from *, k2, *yo, k2tog, yo, k2tog, k2, repeat from *, k10 (41 sts).
• Row 6: Sl1 wyif, k2, yo, k7, p20, k11 (42 sts).
• Row 7: Sl1 wyib, k2, yo, k8, k3, yo, k2tog, k4, yo, k2tog, k4, yo, k2tog, k14 (43 sts).
• Row 8: Sl1 wyif, k2, yo, k8, p20, k12 (44 sts).
• Row 9: Sl1 wyib, k3, yo, k2tog, k6, k6, yo, k2tog, k4, yo, k2tog, k6, k12.
• Row 10: Sl1 wyif, k3, yo, k2tog, k6, p20, k10, k2tog (43 sts).
• Row 11: Sl1 wyib, k3, yo, k2tog, k5, k5, *yo, k2tog, yo, k2tog, k2, repeat from * to last 15 sts, k3, k10, k2tog (42 sts).
• Row 12: Sl1 wyif, k3, yo, k2tog, k5, p20, k9, k2tog (41 sts).
• Row 13: Sl1 wyib, k3, yo, k2tog, k4, k6, yo, k2tog, k4, yo, k2tog, k6, k9, k2tog (40 sts).
• Row 14: Sl1 wyif, k3, yo, k2tog, k4, p20, k8, k2tog (39 sts).
• Row 15: Sl1 wyib, k3, yo, k2tog, k3, k3, yo, k2tog, k4, yo, k2tog, k4, yo, k2tog, k3, k8, k2tog (38 sts).
• Row 16: Sl1 wyif, k3, yo, k2tog, k3, p20, k7, k2tog (37 sts).
• Row 17: K10, *yo, k2tog, yo, k2tog, k2, repeat from * to last 9 sts, k7, k2tog (36 sts).
• Row 18: K7, p20, sl1 wyif, k8.
• Row 19: K14, yo, k2tog, k4, yo, k2tog, k4, yo, k2tog, k8.
• Row 20: Purl.