Shown with a cast-on count of 37 stitches.  

• Row 1 (RS): K2, yo, ssk, k2, *k3, k2tog, yo, k3, yo, ssk, k2, repeat from * to last 7 sts, k3, k2tog, yo, k2.
• Rows 2, 6, 8, 10, 12, 16, 18, and 20: Purl.
• Row 3: Ssk, k1, [yo] twice, ssk, k1, *k2, k2tog, [yo] twice, k1, sl2-k1-p2sso, k1, [yo] twice, ssk, k1, repeat from * to last 7 sts, k2, k2tog, [yo] twice, k1, k2tog.
• Row 4: P2, k1, p1, p3, *p2, [k1, p1, p3] twice, repeat from * to last 6 sts, p2, k1, p1, p2.
• Row 5: Yo, k1, yo, k2, sl2-k1-p2sso, *k1, sl2-k1-p2sso, k2, yo, (k1, yo, k1) in next st, yo, k2, sl2-k1-p2sso, repeat from * to last 7 sts, k1, sl2-k1-p2sso, k2, yo, k1, yo.
• Row 7: K1, yo, ssk, k3, *k4, k2tog, yo, k1, yo, ssk, k3, repeat from * to last 7 sts, k4, k2tog, yo, k1.
• Row 9: K2, yo, ssk, k2tog, yo, *k1, yo, ssk, k2tog, yo, k3, yo, ssk, k2tog, yo, repeat from * to last 7 sts, k1, yo, ssk, k2tog, yo, k2.
• Row 11: K3, k2tog, yo, k1, *k2, yo, ssk, k5, k2tog, yo, k1, repeat from * to last 7 sts, k2, yo, ssk, k3.
• Row 13: K2, k2tog, [yo] twice, k1, *sl2-k1-p2sso, k1, [yo] twice, ssk, k3, k2tog, [yo] twice, k1, repeat from * to last 8 sts, sl2-k1-p2sso, k1, [yo] twice, ssk, k2.
• Row 14: P3, k1, p1, p2, *p1, k1, p1, p5, k1, p1, p2, repeat from * to last 6 sts, p1, k1, p1, p3.
• Row 15: K1, sl2-k1-p2sso, k2, yo, *(k1, yo, k1) in next st, yo, k2, sl2-k1-p2sso, k1, sl2-k1-p2sso, k2, yo, repeat from * to last 7 sts, (k1, yo, k1) in next st, yo, k2, sl2-k1-p2sso, k1.
• Row 17: K4, k2tog, yo, *k1, yo, ssk, k7, k2tog, yo, repeat from * to last 7 sts, k1, yo, ssk, k4.
• Row 19: K1, yo, ssk, k2tog, yo, k1, *k2, [yo, ssk, k2tog, yo, k1] twice, repeat from * to last 7 sts, k2, yo, ssk, k2tog, yo, k1.