Shown with a cast-on count of 31 stitches.  

• Row 1 (RS): K5, *yo, sl2-k1-p2sso, yo, k9, repeat from * to last 2 sts, yo, ssk.
• Rows 2, 4, 6, 8, 10, 12, 14, and 16: Purl.
• Row 3: K1, yo, (k1, yo, k1) in next st, *sl1-k2tog-psso, k3, k3tog, 3-to-9 gather, repeat from * to last 5 sts, sl1-k2tog-psso, k2 (multiple of 14 sts, plus 8).
• Row 5: K2, yo, k2, *k1, ssk, k1, k2tog, k3, yo, k3, yo, k2, repeat from * to last 4 sts, k1, ssk, k1.
• Row 7: K2, yo, k1, yo, *k3tog, sl2-k1-p2sso, sl1-k2tog-psso, yo, k1, yo, k3, yo, k1, yo, repeat from * to last 5 sts, k3tog, ssk (multiple of 12 sts, plus 7).
• Row 9: K2tog, yo, *k9, yo, sl2-k1-p2sso, yo, repeat from * to last 5 sts, k5.
• Row 11: K2, k3tog, *3-to-9 gather, sl1-k2tog-psso, k3, k3tog, repeat from * to last 2 sts, (k1, yo, k1) in next st, yo, k1 (multiple of 14 sts, plus 8).
• Row 13: K1, k2tog, *k3, yo, k3, yo, k3, ssk, k1, k2tog, repeat from * to last 5 sts, k3, yo, k2.
• Row 15: K2tog, *sl1-k2tog-psso, yo, k1, yo, k3, yo, k1, yo, k3tog, sl2-k1-p2sso, repeat from * to last 6 sts, sl1-k2tog-psso, yo, k1, yo, k2 (multiple of 12 sts, plus 7).