Shown with a cast-on count of 56 stitches.  

• Row 1 (RS): K13, [yo, k2tog, k4, ssk, yo, k3] twice, yo, k2tog, k4, ssk, yo, k13.
• Rows 2 and 4: P56.
• Row 3: K12, [yo, k2tog, k6, ssk, yo, k1] twice, yo, k2tog, k6, ssk, yo, k12.
• Row 5: M1L, k13, [yo, k2tog, k4, ssk, yo, k3] twice, yo, k2tog, k4, ssk, yo, k13, M1R (58 sts).
• Rows 6, 8, 10, and 12: P58.
• Row 7: K13, [yo, k2tog, 3/3 RC, ssk, yo, k1] twice, yo, k2tog, 3/3 RC, ssk, yo, k13.
• Row 9: K14, [yo, k2tog, k4, ssk, yo, k3] twice, yo, k2tog, k4, ssk, yo, k14.
• Row 11: K13, [yo, k2tog, k6, ssk, yo, k1] twice, yo, k2tog, k6, ssk, yo, k13.
• Row 13: M1L, k14, [yo, k2tog, k4, ssk, yo, k3] twice, yo, k2tog, k4, ssk, yo, k14, M1R (60 sts).
• Rows 14 and 16: P60.
• Row 15: K14, [yo, k2tog, 3/3 RC, ssk, yo, k1] twice, yo, k2tog, 3/3 RC, ssk, yo, k14.