Shown with a cast-on count of 22 stitches.  

• Row 1 (RS): *K2tog, k3, yo, k1, yo, k3, k2tog, repeat from *.
• Rows 2, 4, 6, 8, 10, and 12: Purl.
• Rows 3 and 11: *K1, k2tog, k2, yo, k1, yo, k2, k2tog, k1, repeat from *.
• Rows 5 and 9: *K2, k2tog, [k1, yo] twice, k1, k2tog, k2, repeat from *.
• Row 7: *K3, k2tog, yo, k1, yo, k2tog, k3, repeat from *.