Shown with a cast-on count of 36 stitches.  

• Row 1 (RS): *Ssk, k6, yo, k7, yo, k1, ssk, repeat from *.
• Rows 2, 4, 6, 8, 10, 12, 14, 16, 18, and 20: Purl.
• Row 3: *Ssk, k5, yo, k2tog, yo, k9, repeat from *.
• Row 5: *Ssk, k4, yo, k2tog, yo, k10, repeat from *.
• Row 7: *Ssk, k3, yo, k2tog, yo, k3, yo, k6, k2tog, repeat from *.
• Row 9: *Ssk, k2, yo, k2tog, yo, k3, yo, ssk, yo, k5, k2tog, repeat from *.
• Row 11: *Ssk, k1, yo, k2tog, yo, k5, yo, ssk, yo, k4, k2tog, repeat from *.
• Row 13: *Ssk, yo, k2tog, yo, k7, yo, ssk, yo, k3, k2tog, repeat from *.
• Row 15: *Ssk, k1, yo, k9, yo, ssk, yo, k2, k2tog, repeat from *.
• Row 17: *K13, yo, ssk, yo, k1, k2tog, repeat from *.
• Row 19: *K14, yo, ssk, yo, k2tog, repeat from *.