Shown with a cast-on count of 27 stitches.  

• Row 1 (RS): K1, *k2tog, yo, k1, yo, ssk, p5, repeat from * to last 6 sts, k2tog, yo, k1, yo, ssk, k1.
• Rows 2, 4, 6, 8, 10, and 12: Purl.
• Row 3: K5, *yo, ssk, p3, k2tog, yo, k3, repeat from * to last 2 sts, k2.
• Row 5: K6, *yo, ssk, p1, k2tog, yo, k5, repeat from * to last st, k1.
• Row 7: K1, p3, *k2tog, yo, k1, yo, ssk, p5, repeat from * to last 3 sts, k2tog, yo, k1.
• Row 9: K1, p2, *k2tog, yo, k3, yo, ssk, p3, repeat from * to last 4 sts, k2tog, yo, k2.
• Row 11: K1, p1, *k2tog, yo, k5, yo, ssk, p1, repeat from * to last 5 sts, k2tog, yo, k3.
• Repeat rows 1-12.