Shown with a cast-on count of 55 stitches.  

• Row 21 (RS): [P1, k1] 4 times, p1, [k2tog, yo] twice, k3, *k2, yo, ssk, yo, sl1-k2tog-psso, yo, k2tog, yo, k3, repeat from * to last 15 sts, k2, [yo, ssk] twice, [p1, k1] 4 times, p1.
• Row 22: [K1, p1] 4 times, k1, purl to last 9 sts, [k1, p1] 4 times, k1.
• Row 23: [K1, p1] 5 times, [yo, ssk] twice, k2, *k1, [k2tog, yo] twice, k1, [yo, ssk] twice, k2, repeat from * to last 15 sts, k1, [k2tog, yo] twice, [p1, k1] 5 times.
• Rows 24 and 32: [P1, k1] 5 times, purl to last 10 sts, [k1, p1] 5 times.
• Row 25: [P1, k1] 5 times, p1, [yo, ssk] twice, k1, *[k2tog, yo] twice, k3, [yo, ssk] twice, k1, repeat from * to last 15 sts, [k2tog, yo] twice, [p1, k1] 5 times, p1.
• Rows 26 and 30: [K1, p1] 5 times, k1, purl to last 11 sts, [k1, p1] 5 times, k1.
• Row 27: [K1, p1] 6 times, yo, ssk, yo, sl1-k2tog-psso, *yo, k2tog, yo, k5, yo, ssk, yo, sl1-k2tog-psso, repeat from * to last 14 sts, yo, k2tog, yo, [p1, k1] 6 times.
• Row 28: [P1, k1] 6 times, purl to last 12 sts, [k1, p1] 6 times.
• Row 29: [P1, k1] 5 times, p1, [k2tog, yo] twice, k1, *[yo, ssk] twice, k3, [k2tog, yo] twice, k1, repeat from * to last 15 sts, [yo, ssk] twice, [p1, k1] 5 times, p1.
• Row 31: [K1, p1] 5 times, [k2tog, yo] twice, k2, *k1, [yo, ssk] twice, k1, [k2tog, yo] twice, k2, repeat from * to last 15 sts, k1, [yo, ssk] twice, [p1, k1] 5 times.