Shown with a cast-on count of 22 stitches.  

• Row 1 (RS): K5, k2tog, yo, *k4, k2tog, yo, repeat from * to last 3 sts, k3tog (multiple of 6 sts, plus 8).
• Rows 2, 4, 6, 8, 10, and 12: Yo, knit (1 more st).
• Row 3: K4, k2tog, yo, k1, *yo, k2tog, k1, k2tog, yo, k1, repeat from * to last 2 sts, yo, k2tog.
• Row 5: K3, k2tog, yo, k2, *k1, yo, k3tog, yo, k2, repeat from * to last 3 sts, k1, yo, k2tog.
• Row 7: K2, k2tog, yo, k3, *k1, k2tog, yo, k3, repeat from * to last 4 sts, k2, yo, k2tog.
• Row 9: K4, yo, k2tog, k1, *k2tog, yo, k1, yo, k2tog, k1, repeat from * to last 5 sts, k2tog, yo, k3tog (multiple of 6 sts, plus 10).
• Row 11: K5, yo, sl1-k2tog-psso, *yo, k3, yo, sl1-k2tog-psso, repeat from * to last 3 sts, yo, k3tog (multiple of 6 sts, plus 9).