Shown with a cast-on count of 80 stitches.  

• Row 1 (WS): K8, p9, k6, p9, k16, p9, k6, p9, k8.
• Row 2: K8, k4, yo, k1, yo, k14, yo, k1, yo, k4, k16, k4, yo, k1, yo, k14, yo, k1, yo, k4, k8 (88 sts).
• Row 3: K9, p9, k8, p9, k18, p9, k8, p9, k9.
• Row 4: K3, yo, k2tog, k4, k3, yo, k3, yo, k14, yo, k3, yo, k3, k18, k3, yo, k3, yo, k14, yo, k3, yo, k3, k9 (96 sts).
• Row 5: K10, p9, k10, p9, k20, p9, k10, p9, k10.
• Row 6: K10, k2, yo, k5, yo, k14, yo, k5, yo, k2, k20, k2, yo, k5, yo, k14, yo, k5, yo, k2, k10 (104 sts).
• Row 7: K11, p9, k12, p9, k22, p9, k12, p9, k11.
• Row 8: K11, k4, yo, k1, yo, k20, yo, k1, yo, k4, k22, k4, yo, k1, yo, k20, yo, k1, yo, k4, k11 (112 sts).
• Row 9: K12, p9, k14, p9, k24, p9, k14, p9, k12.
• Row 10: K12, k3, yo, k3, yo, k20, yo, k3, yo, k3, k24, k3, yo, k3, yo, k20, yo, k3, yo, k3, k12 (120 sts).
• Row 11: K13, p9, k16, p9, k26, p9, k16, p9, k13.
• Row 12: K13, k2, yo, k5, yo, k20, yo, k5, yo, k2, k26, k2, yo, k5, yo, k20, yo, k5, yo, k2, k13 (128 sts).
• Row 13: K14, p9, k18, p9, k28, p9, k18, p9, k14.
• Row 14: K14, k4, yo, k1, yo, k26, yo, k1, yo, k4, k28, k4, yo, k1, yo, k26, yo, k1, yo, k4, k14 (136 sts).
• Row 15: K15, p9, k20, p9, k30, p9, k20, p9, k15.
• Row 16: K15, k3, yo, k3, yo, k26, yo, k3, yo, k3, k30, k3, yo, k3, yo, k26, yo, k3, yo, k3, k15 (144 sts).
• Row 17: K16, p9, k22, p9, k32, p9, k22, p9, k16.
• Row 18: K16, k2, yo, k5, yo, k26, yo, k5, yo, k2, k32, k2, yo, k5, yo, k26, yo, k5, yo, k2, k16 (152 sts).
• Row 19: K17, p9, k24, p9, k34, p9, k24, p9, k17.
• Row 20: K17, k4, yo, k1, yo, k32, yo, k1, yo, k4, k34, k4, yo, k1, yo, k32, yo, k1, yo, k4, k17 (160 sts).