Shown with a cast-on count of 23 stitches.  

• Rows 1 and 9 (RS): *K2, yo, k2tog, k7, repeat from * to last st, k1.
• Rows 2, 4, 6, 8, 10, 12, 14, 16, 18, and 20: Purl.
• Rows 3 and 7: *K1, [yo, k2tog] twice, k6, repeat from * to last st, k1.
• Row 5: *[Yo, k2tog] 3 times, k5, repeat from * to last st, k1.
• Rows 11 and 19: K1, *k7, yo, k2tog, k2, repeat from *.
• Rows 13 and 17: K1, *k6, [yo, k2tog] twice, k1, repeat from *.
• Row 15: K1, *k5, [yo, k2tog] 3 times, repeat from *.