Shown with a cast-on count of 48 stitches.  

• Row 1 (RS): K1, yo, k2tog, k5, *k5, ssk, yo, k2, yo, k2tog, k5, repeat from * to last 8 sts, k5, ssk, yo, k1.
• Rows 2, 4, 6, 12, 14, and 16: Purl.
• Row 3: [K1, yo, k2tog] twice, k2, *k2, ssk, yo, k1, ssk, yo, 1/1 RC, yo, k2tog, k1, yo, k2tog, k2, repeat from * to last 8 sts, k2, [ssk, yo, k1] twice.
• Row 5: K2, yo, ssk, k1, yo, ssk, *1/1 RC, k2tog, yo, k1, k2tog, yo, k4, yo, ssk, k1, yo, ssk, repeat from * to last 9 sts, 1/1 RC, k2tog, yo, k1, k2tog, yo, k2.
• Row 7: K3, ssk, yo, k1, k2tog, *[yo] twice, ssk, k1, yo, k2tog, k2, 1/1 RC, k2, ssk, yo, k1, k2tog, repeat from * to last 8 sts, [yo] twice, ssk, k1, yo, k2tog, k3.
• Rows 8 and 20: P7, k1, p1, *p14, k1, p1, repeat from * to last 7 sts, p7.
• Row 9: Yo, ssk, [k2tog, yo, k1] twice, *[k1, yo, ssk] twice, k2tog, [yo] twice, ssk, [k2tog, yo, k1] twice, repeat from * to last 8 sts, [k1, yo, ssk] twice, k2tog, yo.
• Rows 10 and 18: P8, *p7, k1, p1, p7, repeat from * to last 8 sts, p8.
• Row 11: K5, ssk, yo, k1, *k1, yo, k2tog, k10, ssk, yo, k1, repeat from * to last 8 sts, k1, yo, k2tog, k5.
• Row 13: K2, ssk, yo, k1, ssk, yo, *1/1 RC, yo, k2tog, k1, yo, k2tog, k4, ssk, yo, k1, ssk, yo, repeat from * to last 9 sts, 1/1 RC, yo, k2tog, k1, yo, k2tog, k2.
• Row 15: [K1, k2tog, yo] twice, k2, *k2, yo, ssk, k1, yo, ssk, 1/1 RC, k2tog, yo, k1, k2tog, yo, k2, repeat from * to last 8 sts, k2, [yo, ssk, k1] twice.
• Row 17: Yo, ssk, k1, yo, k2tog, k2, *1/1 RC, k2, ssk, yo, k1, k2tog, [yo] twice, ssk, k1, yo, k2tog, k2, repeat from * to last 9 sts, 1/1 RC, k2, ssk, yo, k1, k2tog, yo.
• Row 19: [K1, yo, ssk] twice, k2tog, *[yo] twice, ssk, k2tog, yo, k1, k2tog, yo, k2, yo, ssk, k1, yo, ssk, k2tog, repeat from * to last 8 sts, [yo] twice, ssk, [k2tog, yo, k1] twice.