Shown with a cast-on count of 27 stitches.  

• Rows 1 and 23 (RS): K1, *k1, ssk, k1, yo, k4, yo, k1, k2tog, k2, repeat from *.
• Rows 2, 4, 6, 8, 12, 14, 16, 20, 22, and 24: Purl.
• Row 3: K1, *yo, k1, ssk, k6, k2tog, k1, yo, k1, repeat from *.
• Row 5: K1, *k2, yo, ssk, k4, k2tog, yo, k3, repeat from *.
• Row 7: K1, *k3, yo, ssk, k2, k2tog, yo, k4, repeat from *.
• Row 9: K1, *k4, k2tog, yo wrapping yarn twice, ssk, k5, repeat from * (multiple of 12 sts, plus 1).
• Rows 10 and 18: *P6, (k1, p1) in next st, p5, repeat from * to last st, p1 (multiple of 13 sts, plus 1).
• Row 11: K1, *k3, k2tog, yo, k2, yo, ssk, k4, repeat from *.
• Rows 13 and 15: K1, *k1, yo, k2tog, k6, ssk, yo, k2, repeat from *.
• Row 17: K1, *k1, k2tog, k3, yo wrapping yarn twice, k3, ssk, k2, repeat from * (multiple of 12 sts, plus 1).
• Row 19: K1, *yo, k2tog, k8, ssk, yo, k1, repeat from *.
• Row 21: K1, *k1, ssk, yo, k6, yo, k2tog, k2, repeat from *.