Shown with a cast-on count of 28 stitches.  

• Row 1 (RS): *K1, p1, yo, k3, k2tog, p1, ssk, k3, yo, repeat from * to last 2 sts, p1, k1.
• Rows 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, and 22: Purl.
• Rows 3 and 17: *K1, p1, k2, yo, k2tog, k1, p1, k1, ssk, yo, k2, repeat from * to last 2 sts, p1, k1.
• Rows 5, 9, and 13: *K1, p1, k1, yo, k2tog, k2, p1, k2, ssk, yo, k1, repeat from * to last 2 sts, p1, k1.
• Rows 7 and 15: *K1, p1, yo, k2tog, k1, yo, k2tog, p1, ssk, yo, k1, ssk, yo, repeat from * to last 2 sts, p1, k1.
• Row 11: *K1, p1, k3, yo, k2tog, p1, ssk, yo, k3, repeat from * to last 2 sts, p1, k1.
• Row 19: *K1, p1, k2tog, k2, yo, k1, p1, k1, yo, k2, ssk, repeat from * to last 2 sts, p1, k1.
• Row 21: *K1, p1, yo, k1, k2tog, k2, p1, k2, ssk, k1, yo, repeat from * to last 2 sts, p1, k1.