Shown with a cast-on count of 27 stitches.  

• Row 1 (RS): K2tog, *yo, ssk, k1, k2tog, yo, k1, repeat from * to last 7 sts, yo, ssk, k1, k2tog, yo, k2tog (multiple of 6 sts, plus 7).
• Row 2: K1, purl to last st, k1.
• Row 3: K2tog, k1, ssk, k1, yo, *k1, yo, k1, sl2-k1-p2sso, k1, yo, repeat from * to last 7 sts, k1, yo, [k1, k2tog] twice (multiple of 6 sts, plus 11).
• Row 4: K2tog, purl to last 2 sts, k2tog (2 fewer sts).