Shown with a cast-on count of 90 stitches.  

• Row 1 (RS): K2tog, [yo] twice, k1, k2tog, k2, k2tog, yo, k4, k2tog, yo, *yo, ssk, k4, yo, ssk, k2, ssk, k1, [yo] twice, ssk, k2tog, [yo] twice, k1, k2tog, k2, k2tog, yo, k4, k2tog, yo, repeat from * to last 15 sts, yo, ssk, k4, yo, ssk, k2, ssk, k1, [yo] twice, ssk.
• Row 2: P1, k1, p12, k1, *p12, k1, p1, 1/1 RC, k1, p12, k1, repeat from * to last 15 sts, p12, k1, p2.
• Row 3: K3, 1/1 RC, k7, 1/1 RC, k1, *k1, 1/1 LC, k7, 1/1 LC, [k2, 1/1 RC] twice, k7, 1/1 RC, k1, repeat from * to last 15 sts, k1, 1/1 LC, k7, 1/1 LC, k3.
• Rows 4 and 14: Purl.
• Row 5: 1/1 LC, 1/1 RC, k3, ssk, [yo, k2tog] twice, [yo] twice, ssk, *k2tog, [yo] twice, [ssk, yo] twice, k2tog, k3, [1/1 LC, 1/1 RC] twice, k3, ssk, [yo, k2tog] twice, [yo] twice, ssk, repeat from * to last 15 sts, k2tog, [yo] twice, [ssk, yo] twice, k2tog, k3, 1/1 LC, 1/1 RC.
• Row 6: P12, k1, p2, *p1, k1, p25, k1, p2, repeat from * to last 15 sts, p1, k1, p13.
• Row 7: K1, 1/1 RC, k1, k2tog, yo, k2tog, [yo] twice, k2tog, k4, *1/1 RC, k4, ssk, [yo] twice, ssk, yo, ssk, k1, 1/1 LC, k2, 1/1 RC, k1, k2tog, yo, k2tog, [yo] twice, k2tog, k4, repeat from * to last 16 sts, 1/1 RC, k4, ssk, [yo] twice, ssk, yo, ssk, k1, 1/1 LC, k1.
• Row 8: P7, k1, p8, *p5, k1, p15, k1, p8, repeat from * to last 14 sts, p5, k1, p8.
• Row 9: 1/1 RC, k1, k2tog, yo, k1, ssk, [yo, k2tog] twice, [yo] twice, ssk, k1, *k1, k2tog, [yo] twice, [ssk, yo] twice, k2tog, k1, yo, ssk, k1, 1/1 LC, 1/1 RC, k1, k2tog, yo, k1, ssk, [yo, k2tog] twice, [yo] twice, ssk, k1, repeat from * to last 15 sts, k1, k2tog, [yo] twice, [ssk, yo] twice, k2tog, k1, yo, ssk, k1, 1/1 LC.
• Row 10: P11, k1, p3, *p2, k1, p23, k1, p3, repeat from * to last 15 sts, p2, k1, p12.
• Row 11: Yo, ssk, k4, yo, ssk, k2, ssk, k1, [yo] twice, ssk, *k2tog, [yo] twice, k1, k2tog, k2, k2tog, yo, k4, k2tog, [yo] twice, ssk, k4, yo, ssk, k2, ssk, k1, [yo] twice, ssk, repeat from * to last 15 sts, k2tog, [yo] twice, k1, k2tog, k2, k2tog, yo, k4, k2tog, yo.
• Row 12: P12, k1, p2, *p1, [k1, p12] twice, k1, p2, repeat from * to last 15 sts, p1, k1, p13.
• Row 13: K1, 1/1 LC, k7, 1/1 LC, k2, *1/1 RC, k2, 1/1 RC, k7, 1/1 RC, k2, 1/1 LC, k7, 1/1 LC, k2, repeat from * to last 16 sts, 1/1 RC, k2, 1/1 RC, k7, 1/1 RC, k1.
• Row 15: K2tog, [yo] twice, [ssk, yo] twice, k2tog, k3, 1/1 LC, 1/1 RC, *1/1 LC, 1/1 RC, k3, ssk, yo, k2tog, yo, [k2tog, [yo] twice, ssk] twice, yo, ssk, yo, k2tog, k3, 1/1 LC, 1/1 RC, repeat from * to last 15 sts, 1/1 LC, 1/1 RC, k3, ssk, [yo, k2tog] twice, [yo] twice, ssk.
• Row 16: P1, k1, p13, *p12, k1, p1, 1/1 RC, k1, p13, repeat from * to last 15 sts, p12, k1, p2.
• Row 17: K5, ssk, [yo] twice, ssk, yo, ssk, k1, 1/1 LC, k1, *k1, 1/1 RC, k1, k2tog, yo, k2tog, [yo] twice, k2tog, k4, 1/1 RC, k4, ssk, [yo] twice, ssk, yo, ssk, k1, 1/1 LC, k1, repeat from * to last 15 sts, k1, 1/1 RC, k1, k2tog, yo, k2tog, [yo] twice, k2tog, k5.
• Row 18: P6, k1, p8, *p7, k1, p13, k1, p8, repeat from * to last 15 sts, p7, k1, p7.
• Row 19: K1, k2tog, [yo] twice, [ssk, yo] twice, k2tog, k1, yo, ssk, k1, 1/1 LC, *1/1 RC, k1, k2tog, yo, k1, ssk, [yo, k2tog] twice, [yo] twice, ssk, k2, k2tog, [yo] twice, [ssk, yo] twice, k2tog, k1, yo, ssk, k1, 1/1 LC, repeat from * to last 15 sts, 1/1 RC, k1, k2tog, yo, k1, ssk, [yo, k2tog] twice, [yo] twice, ssk, k1.
• Row 20: P2, k1, p12, *p11, k1, p5, k1, p12, repeat from * to last 15 sts, p11, k1, p3.