Shown with a cast-on count of 27 stitches.  

• Row 1 (RS): K1, *k3, yo, k1, k2tog, k1, ssk, k1, yo, k2, repeat from * to last 2 sts, k2.
• Rows 2, 4, 6, 8, and 10: Purl.
• Row 3: K1, *k2, yo, k1, ssk, k3, k2tog, k1, yo, k1, repeat from * to last 2 sts, k2.
• Row 5: K1, *k5, yo, sl2-k1-p2sso, yo, k4, repeat from * to last 2 sts, k2.
• Row 7: K1, *k2, yo, k2, ssk, k1, k2tog, k2, yo, k1, repeat from * to last 2 sts, k2.
• Row 9: K1, *k2, yo, sl2-k1-p2sso, yo, k3, yo, sl2-k1-p2sso, yo, k1, repeat from * to last 2 sts, k2.
• Row 11: K1, *k1, k2tog, k1, yo, k6, yo, ssk, repeat from * to last 2 sts, k2.