Shown with a cast-on count of 23 stitches.  

• Rows 1, 3, 5, 7, 9, and 11 (WS): Purl.
• Row 2: K2, *k1, yo, ssk, k1, k2tog, yo, repeat from * to last 3 sts, k3.
• Rows 4 and 10: K4, *yo, k3, repeat from * to last st, k1 (multiple of 4 sts, plus 5).
• Row 6: K2, k2tog, *yo, ssk, k1, k2tog, yo, sl2-k1-p2sso, repeat from * to last 9 sts, yo, ssk, k1, k2tog, yo, ssk, k2 (multiple of 6 sts, plus 11).
• Row 8: K2, *k1, k2tog, yo, k1, yo, ssk, repeat from * to last 3 sts, k3.
• Row 12: K2, *k1, k2tog, yo, sl2-k1-p2sso, yo, ssk, repeat from * to last 3 sts, k3 (multiple of 6 sts, plus 5).