Shown with a cast-on count of 25 stitches.  

• Row 1 (RS): *K2, k2tog, yo, k1, yo, k2tog, k1, repeat from * to last st, k1.
• Rows 2, 4, 6, 8, 10, and 12: Purl.
• Row 3: *K1, k2tog, yo, k3, yo, k2tog, repeat from * to last st, k1.
• Row 5: K2tog, yo, *k5, yo, sl1-k2tog-psso, yo, repeat from * to last 7 sts, k5, yo, k2tog.
• Row 7: *K1, yo, k2tog, k3, k2tog, yo, repeat from * to last st, k1.
• Row 9: *K2, yo, k2tog, k1, k2tog, yo, k1, repeat from * to last st, k1.
• Row 11: K3, *yo, sl1-k2tog-psso, yo, k5, repeat from * to last 6 sts, yo, sl1-k2tog-psso, yo, k3.