Shown with a cast-on count of 25 stitches.  

• Row 1 (RS): K1, *yo, k2, sl1-k2tog-psso, k2, yo, k1, repeat from *.
• Rows 2, 4, 6, 8, 10, and 12: Knit.
• Row 3: K1, *k1, yo, k1, sl1-k2tog-psso, k1, yo, k2, repeat from *.
• Row 5: K1, *k2, yo, sl1-k2tog-psso, yo, k3, repeat from *.
• Row 7: K2tog, *k2, yo, k1, yo, k2, sl1-k2tog-psso, repeat from * to last 7 sts, k2, yo, k1, yo, k2, ssk.
• Row 9: K2tog, *k1, yo, k3, yo, k1, sl1-k2tog-psso, repeat from * to last 7 sts, k1, yo, k3, yo, k1, ssk.
• Row 11: K2tog, *yo, k5, yo, sl1-k2tog-psso, repeat from * to last 7 sts, yo, k5, yo, ssk.