Shown with a cast-on count of 21 stitches.  

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