Shown with a cast-on count of 12 stitches.  

• Row 1 (RS): K2, *k2tog, yo, k3, repeat from *.
• Rows 2, 4, 6, 8, 10, 12, 14, and 16: Purl.
• Row 3: K2, *k2, yo, ssk, k1, repeat from *.
• Row 5: K2, *k2, k2tog, yo, k1, repeat from *.
• Row 7: K2, *yo, ssk, k3, repeat from *.
• Row 9: *K1, k2tog, yo, k2, repeat from * to last 2 sts, k2.
• Row 11: *K2, yo, ssk, k1, repeat from * to last 2 sts, k2.
• Row 13: *K2, k2tog, yo, k1, repeat from * to last 2 sts, k2.
• Row 15: *K1, yo, ssk, k2, repeat from * to last 2 sts, k2.