Shown with a cast-on count of 73 stitches.  

• Row 1 (RS): K1, *yo, k2tog, k3, k2tog, yo, k2tog, yo, ssk, yo, k1, yo, k2tog, yo, ssk, yo, ssk, k3, ssk, yo, k1, repeat from *.
• Row 2: P5, *p2tog tbl, yo, p11, yo, p2tog, p9, repeat from * to last 20 sts, p2tog tbl, yo, p11, yo, p2tog, p5.
• Row 3: K1, *yo, k2tog, k1, [k2tog, yo, k1] twice, ssk, yo, k1, yo, k2tog, [k1, yo, ssk] twice, k1, ssk, yo, k1, repeat from *.
• Row 4: P3, *p2tog tbl, yo, p15, yo, p2tog, p5, repeat from * to last 22 sts, p2tog tbl, yo, p15, yo, p2tog, p3.
• Row 5: K2, *[k2tog, yo, k2] twice, ssk, yo, k1, yo, k2tog, [k2, yo, ssk] twice, k3, repeat from * to last 23 sts, [k2tog, yo, k2] twice, ssk, yo, k1, yo, k2tog, [k2, yo, ssk] twice, k2.
• Row 6: P1, *p2tog tbl, yo, p19, yo, p2tog, p1, repeat from *.
• Row 7: K2tog, *yo, k3, k2tog, yo, k3, ssk, yo, k1, yo, k2tog, k3, yo, ssk, k3, yo, sl1-k2tog-psso, repeat from * to last 23 sts, yo, k3, k2tog, yo, k3, ssk, yo, k1, yo, k2tog, k3, yo, ssk, k3, yo, ssk.
• Rows 8 and 16: Purl.
• Row 9: K1, *yo, k2tog, [yo, ssk] twice, k3, ssk, yo, k1, yo, k2tog, k3, [k2tog, yo] twice, ssk, yo, k1, repeat from *.
• Row 10: P6, *yo, p2tog, p9, p2tog tbl, yo, p11, repeat from * to last 19 sts, yo, p2tog, p9, p2tog tbl, yo, p6.
• Row 11: K1, *yo, k2tog, [k1, yo, ssk] twice, k1, ssk, yo, k1, yo, k2tog, k1, [k2tog, yo, k1] twice, ssk, yo, k1, repeat from *.
• Row 12: P8, *yo, p2tog, p5, p2tog tbl, yo, p15, repeat from * to last 17 sts, yo, p2tog, p5, p2tog tbl, yo, p8.
• Row 13: K1, *yo, k2tog, [k2, yo, ssk] twice, k3, [k2tog, yo, k2] twice, ssk, yo, k1, repeat from *.
• Row 14: P10, *yo, p2tog, p1, p2tog tbl, yo, p19, repeat from * to last 15 sts, yo, p2tog, p1, p2tog tbl, yo, p10.
• Row 15: K1, *yo, k2tog, k3, yo, ssk, k3, yo, sl1-k2tog-psso, yo, k3, k2tog, yo, k3, ssk, yo, k1, repeat from *.