Shown with a cast-on count of 59 stitches.  

• Row 1 (RS): K1, *p1, ssk, yo, k2, yo, ssk, yo, k1, sl2-k1-p2sso, k1, yo, k2tog, yo, p1, yo, ssk, yo, k1, sl2-k1-p2sso, k1, yo, k2tog, yo, k2, yo, k2tog, repeat from * to last 2 sts, p1, k1.
• Rows 2, 4, 6, 8, 10, 12, 14, and 16: K2, *p13, k1, p13, k1, repeat from * to last st, k1.
• Row 3: K1, *p1, ssk, yo, k3, yo, ssk, yo, sl2-k1-p2sso, yo, k2tog, yo, k1, p1, k1, yo, ssk, yo, sl2-k1-p2sso, yo, k2tog, yo, k3, yo, k2tog, repeat from * to last 2 sts, p1, k1.
• Row 5: K1, *p1, ssk, yo, k4, yo, ssk, k1, k2tog, yo, k2, p1, k2, yo, ssk, k1, k2tog, yo, k4, yo, k2tog, repeat from * to last 2 sts, p1, k1.
• Row 7: K1, *p1, ssk, yo, k5, yo, sl2-k1-p2sso, yo, k1, yo, k2tog, p1, ssk, yo, k1, yo, sl2-k1-p2sso, yo, k5, yo, k2tog, repeat from * to last 2 sts, p1, k1.
• Row 9: K1, *p1, yo, ssk, yo, k1, sl2-k1-p2sso, k1, yo, k2tog, yo, k2, yo, k2tog, p1, ssk, yo, k2, yo, ssk, yo, k1, sl2-k1-p2sso, k1, yo, k2tog, yo, repeat from * to last 2 sts, p1, k1.
• Row 11: K1, *p1, k1, yo, ssk, yo, sl2-k1-p2sso, yo, k2tog, yo, k3, yo, k2tog, p1, ssk, yo, k3, yo, ssk, yo, sl2-k1-p2sso, yo, k2tog, yo, k1, repeat from * to last 2 sts, p1, k1.
• Row 13: K1, *p1, k2, yo, ssk, k1, k2tog, yo, k4, yo, k2tog, p1, ssk, yo, k4, yo, ssk, k1, k2tog, yo, k2, repeat from * to last 2 sts, p1, k1.
• Row 15: K1, *p1, ssk, yo, k1, yo, sl2-k1-p2sso, yo, k5, yo, k2tog, p1, ssk, yo, k5, yo, sl2-k1-p2sso, yo, k1, yo, k2tog, repeat from * to last 2 sts, p1, k1.