Shown with a cast-on count of 18 stitches.  

• Rows 1 and 25 (RS): K8, yo, k2tog, k8.
• Rows 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24, 26, 28, and 30 (WS): Purl.
• Rows 3 and 23: K7, yo, sl2-k1-p2sso, yo, k8.
• Row 5: K6, yo, k2tog, k1, ssk, yo, k7.
• Row 7: K5, yo, k2tog, k3, ssk, yo, k6.
• Row 9: K4, yo, k2tog, k5, ssk, yo, k5.
• Row 11: K3, yo, k2tog, k7, ssk, yo, k4.
• Row 13: K2, yo, ssk, k9, k2tog, yo, k3.
• Row 15: K3, yo, ssk, k7, k2tog, yo, k4.
• Row 17: K4, yo, ssk, k5, k2tog, yo, k5.
• Row 19: K5, yo, ssk, k3, k2tog, yo, k6.
• Row 21: K6, yo, ssk, k1, k2tog, yo, k7.