Shown with a cast-on count of 25 stitches.  

• Rows 1 and 9 (RS): K3, yo, *sl1-k2tog-psso, yo, k5, yo, repeat from * to last 6 sts, sl1-k2tog-psso, yo, k3.
• Rows 2, 4, 6, 8, 10, 12, 14, 16, 18, and 20: Purl.
• Rows 3 and 7: K2, yo, ssk, *k1, k2tog, yo, k3, yo, ssk, repeat from * to last 5 sts, k1, k2tog, yo, k2.
• Row 5: K1, yo, ssk, yo, *sl1-k2tog-psso, yo, k2tog, yo, k1, yo, ssk, yo, repeat from * to last 6 sts, sl1-k2tog-psso, yo, k2tog, yo, k1.
• Rows 11 and 19: K2tog, yo, k2, *k3, yo, sl1-k2tog-psso, yo, k2, repeat from * to last 5 sts, k3, yo, ssk.
• Rows 13 and 17: K1, k2tog, yo, k1, *k2, yo, ssk, k1, k2tog, yo, k1, repeat from * to last 5 sts, k2, yo, ssk, k1.
• Row 15: K2tog, yo, k2tog, yo, *k1, yo, ssk, yo, sl1-k2tog-psso, yo, k2tog, yo, repeat from * to last 5 sts, k1, yo, ssk, yo, ssk.