Shown with a cast-on count of 37 stitches.  

• Row 1 (RS): Ssk, yo, k1, yo, *sl2-k1-p2sso, yo, ssk, k1, yo, k1, yo, k1, k2tog, yo, repeat from * to last 14 sts, sl2-k1-p2sso, yo, ssk, k1, yo, k1, yo, k1, k2tog, yo, sl2-k1-p2sso, yo, k1.
• Rows 2, 4, 6, 8, 10, 12, 14, 16, 18, and 20: Purl.
• Row 3: K1, yo, sl2-k1-p2sso, yo, *k1, yo, sl2-k1-p2sso, k3, sl2-k1-p2sso, yo, repeat from * to last 13 sts, k1, yo, sl2-k1-p2sso, k3, sl2-k1-p2sso, yo, k1, yo, k2tog (multiple of 8 sts, plus 15).
• Row 5: K1, yo, k2tog, yo, *3-to-3 gather, yo, ssk, k1, k2tog, yo, repeat from * to last 12 sts, 3-to-3 gather, yo, ssk, k1, k2tog, yo, sl2-k1-p2sso, yo, k1.
• Row 7: K1, yo, k2tog, yo, k2tog, yo, *k1, yo, ssk, yo, sl1-k2tog-psso, yo, k2tog, yo, repeat from * to last 10 sts, k1, yo, ssk, yo, sl1-k2tog-psso, yo, k2tog, yo, k2tog.
• Row 9: Ssk, yo, k1, yo, k2tog, k1, yo, *k1, yo, k1, ssk, yo, k1, yo, k2tog, k1, yo, repeat from * to last 9 sts, k1, yo, k1, ssk, yo, k1, yo, k2tog, yo, k2tog (multiple of 10 sts, plus 17).
• Row 11: K1, yo, sl2-k1-p2sso, yo, ssk, k1, yo, *k1, yo, k1, k2tog, yo, sl2-k1-p2sso, yo, ssk, k1, yo, repeat from * to last 10 sts, k1, yo, k1, k2tog, yo, sl2-k1-p2sso, yo, k1, yo, k2tog.
• Row 13: Ssk, yo, k1, yo, sl2-k1-p2sso, k1, *k2, sl2-k1-p2sso, yo, k1, yo, sl2-k1-p2sso, k1, repeat from * to last 10 sts, k2, sl2-k1-p2sso, yo, k1, yo, sl2-k1-p2sso, yo, k1 (multiple of 8 sts, plus 15).
• Row 15: K1, yo, sl1-k2tog-psso, yo, ssk, *k1, k2tog, yo, 3-to-3 gather, yo, ssk, repeat from * to last 9 sts, k1, k2tog, yo, 3-to-3 gather, yo, ssk, yo, k1.
• Row 17: Ssk, yo, ssk, yo, *sl1-k2tog-psso, yo, k2tog, yo, k1, yo, ssk, yo, repeat from * to last 11 sts, sl1-k2tog-psso, yo, k2tog, yo, k1, yo, ssk, yo, ssk, yo, k1.
• Row 19: Ssk, yo, ssk, yo, *k1, yo, k2tog, k1, yo, k1, yo, k1, ssk, yo, repeat from * to last 11 sts, k1, yo, k2tog, k1, yo, k1, yo, k1, ssk, yo, k1, yo, k2tog (multiple of 10 sts, plus 17).