Shown with a cast-on count of 18 stitches.  

• Rows 1 and 7 (RS): K1, yo, k2tog, *k2tog, yo, k1, yo, k2tog, k1, repeat from * to last 3 sts, k2tog, yo, k1.
• Row 2: K2, yo, *sl1-k2tog-psso, yo, k3, yo, repeat from * to last 4 sts, k2tog, k2.
• Rows 3 and 5: K1, yo, k2tog, *yo, k2tog, k1, k2tog, yo, k1, repeat from * to last 3 sts, yo, k2tog, k1.
• Row 4: K1, k2tog, yo, *k1, yo, k2tog, yo, sl1-k2tog-psso, yo, repeat from * to last 3 sts, k3.
• Row 6: K2tog, yo, k1, *k2, yo, sl1-k2tog-psso, yo, k1, repeat from * to last 3 sts, k3.
• Row 8: K1, yo, k2tog, *yo, sl1-k2tog-psso, yo, k1, yo, k2tog, repeat from * to last 3 sts, k3.