Shown with a cast-on count of 16 stitches.  

• Rows 1, 3, 5, 7, and 9 (RS): Purl.
• Row 2: K2, *yo, sl1-k2tog-psso, yo, k1, repeat from * to last 2 sts, k2.
• Row 4: K2, *k1, yo, sl1-k2tog-psso, yo, repeat from * to last 2 sts, k2.
• Row 6: K1, k2tog, *yo, k1, yo, sl1-k2tog-psso, repeat from * to last 5 sts, yo, k1, yo, ssk, k2.
• Row 8: K2, k2tog, *yo, k1, yo, sl1-k2tog-psso, repeat from * to last 4 sts, yo, k1, yo, ssk, k1.