Shown with a cast-on count of 45 stitches.  

• Row 1 (RS): K1, *k6, yo, k2tog, k3, k2tog, yo, k6, repeat from * to last 6 sts, k6.
• Rows 2, 4, 6, 8, 10, and 12: Purl.
• Row 3: K1, *k4, yo, k2tog, k7, k2tog, yo, k4, repeat from * to last 6 sts, k6.
• Row 5: K1, *k2, yo, k2tog, k11, ssk, yo, k2, repeat from * to last 6 sts, k6.
• Row 7: K1, *yo, k2tog, k5, yo, k2tog, k3, yo, k2tog, k5, repeat from * to last 6 sts, k2, yo, k2tog, ssk, yo.
• Row 9: K1, *k4, yo, k2tog, k7, ssk, yo, k4, repeat from * to last 6 sts, k2, yo, k2tog, ssk, yo.
• Row 11: K1, *k2, yo, k2tog, k11, ssk, yo, k2, repeat from * to last 6 sts, k2, yo, k2tog, ssk, yo.
• Row 14: Purl.