Shown with a cast-on count of 84 stitches.  

• Row 1 (RS): K1, k2tog, yo, k1, yo, k1, yo, k3tog, k8, *yo, ssk, k4, k2tog, yo, ssk, k2tog, yo, k2, yo, k6, yo, ssk, k8, repeat from * to last 8 sts, k8.
• Rows 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24, 26, 28, 30, 32, 34, 36, 38, and 40: Purl.
• Row 3: K1, k2tog, yo, k1, yo, k2, yo, k3tog, k7, *k1, yo, ssk, k3, k2tog, yo, k3tog, yo, k3, yo, k7, yo, ssk, k7, repeat from * to last 8 sts, k8.
• Row 5: K1, k2tog, yo, k1, yo, k3, yo, k3tog, k6, *k2tog, yo, ssk, k2, [k2tog, yo] twice, k4, yo, k8, yo, ssk, k6, repeat from * to last 8 sts, k8.
• Row 7: K1, k2tog, yo, k1, yo, k4, yo, k3tog, k5, *k2tog, yo, ssk, k1, [k2tog, yo] twice, k5, yo, k9, yo, ssk, k5, repeat from * to last 8 sts, k8.
• Row 9: K1, k2tog, yo, k1, yo, k5, yo, k3tog, k4, *k2tog, yo, ssk, k2tog, yo, k2, yo, k6, yo, ssk, k8, yo, ssk, k4, repeat from * to last 8 sts, k8.
• Row 11: K1, k2tog, yo, k1, yo, k6, yo, k3tog, k3, *k2tog, yo, k3tog, yo, k3, yo, k7, yo, ssk, k8, yo, ssk, k3, repeat from * to last 8 sts, k8.
• Row 13: K1, k2tog, yo, k7, k2tog, yo, ssk, k2, k2tog, *yo, k2tog, yo, k4, yo, k8, yo, ssk, k6, k2tog, yo, ssk, k2, k2tog, repeat from * to last 6 sts, k6 (multiple of 30 sts, plus 22).
• Row 15: K1, k2tog, yo, k7, k2tog, yo, ssk, k1, k2tog, yo, *k2tog, yo, k5, yo, k9, yo, ssk, k5, k2tog, yo, ssk, k1, k2tog, yo, repeat from * to last 5 sts, k5 (multiple of 30 sts, plus 21).
• Row 17: K1, k2tog, yo, k7, k2tog, yo, ssk, k2tog, yo, k1, *k1, yo, k6, yo, ssk, k8, yo, ssk, k4, k2tog, yo, ssk, k2tog, yo, k1, repeat from * to last 4 sts, k4 (multiple of 30 sts, plus 20).
• Row 19: K1, k2tog, yo, k7, k2tog, yo, k3tog, yo, k2, *k1, yo, k7, yo, ssk, k8, yo, ssk, k3, k2tog, yo, k3tog, yo, k2, repeat from * to last 3 sts, k3 (multiple of 30 sts, plus 19).
• Row 21: K1, k2tog, yo, k6, k3tog, yo, k2tog, yo, k3, *k1, yo, k8, yo, ssk, k6, k2tog, yo, ssk, k2, [k2tog, yo] twice, k3, repeat from * to last 2 sts, k2 (multiple of 30 sts, plus 18).
• Row 23: K1, k2tog, yo, k5, k3tog, yo, k2tog, yo, k4, *k1, yo, k9, yo, ssk, k5, k2tog, yo, ssk, k1, [k2tog, yo] twice, k4, repeat from * to last st, k1 (multiple of 30 sts, plus 17).
• Row 25: K1, k2tog, yo, k4, k3tog, yo, k2, yo, k4, *k2, yo, ssk, k8, yo, ssk, k4, k2tog, yo, ssk, k2tog, yo, k2, yo, k4, repeat from * to last st, k1.
• Row 27: K1, k2tog, yo, k3, k3tog, yo, k3, yo, k4, *k3, yo, ssk, k8, yo, ssk, k3, k2tog, yo, k3tog, yo, k3, yo, k4, repeat from * to last st, k1.
• Row 29: K1, k2tog, yo, k2, k3tog, yo, k4, yo, k4, *k4, yo, ssk, k6, k2tog, yo, ssk, k2, [k2tog, yo] twice, k4, yo, k4, repeat from * to last st, k1.
• Row 31: K1, k2tog, yo, k1, k3tog, yo, k5, yo, k4, *k5, yo, ssk, k5, k2tog, yo, ssk, k1, [k2tog, yo] twice, k5, yo, k4, repeat from * to last st, k1.
• Row 33: [K1, k2tog, yo] twice, k6, yo, ssk, k2, *k6, yo, ssk, k4, k2tog, yo, ssk, k2tog, yo, k2, yo, k6, yo, ssk, k2, repeat from * to last st, k1.
• Row 35: [K1, k2tog, yo] twice, k7, yo, ssk, k1, *k7, yo, ssk, k3, k2tog, yo, k3tog, yo, k3, yo, k7, yo, ssk, k1, repeat from * to last st, k1.
• Row 37: [K1, k2tog, yo] twice, k8, yo, ssk, *k6, k2tog, yo, ssk, k2, [k2tog, yo] twice, k4, yo, k8, yo, ssk, repeat from * to last st, k1.
• Row 39: [K1, k2tog, yo] twice, k9, yo, *ssk, k5, k2tog, yo, ssk, k1, [k2tog, yo] twice, k5, yo, k9, yo, repeat from * to last 2 sts, k2 (multiple of 30 sts, plus 18).