Shown with a cast-on count of 33 stitches.  

• Rows 1, 3, and 5 (RS): *Yo, k3, ssk, k2tog, k3, yo, k1, repeat from *.
• Rows 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24, 26, and 28: Purl.
• Row 7: K1, *yo, k2, ssk, k2tog, k2, yo, k3, repeat from * to last 10 sts, yo, k2, ssk, k2tog, k2, yo, k2.
• Row 9: K2, *yo, k1, ssk, k2tog, k1, yo, k5, repeat from * to last 9 sts, yo, k1, ssk, k2tog, k1, yo, k3.
• Row 11: K3, *yo, ssk, k2tog, yo, k7, repeat from * to last 8 sts, yo, ssk, k2tog, yo, k4.
• Row 13: *K4, yo, ssk, yo, k3, ssk, repeat from *.
• Rows 15, 17, and 19: *K2tog, k3, yo, k1, yo, k3, ssk, repeat from *.
• Row 21: *K2tog, k2, yo, k3, yo, k2, ssk, repeat from *.
• Row 23: *K2tog, k1, yo, k5, yo, k1, ssk, repeat from *.
• Row 25: *K2tog, yo, k7, yo, ssk, repeat from *.
• Row 27: K1, *yo, k3, ssk, k4, yo, ssk, repeat from * to last 10 sts, yo, k3, ssk, k4, yo, k1 (multiple of 11 sts, plus 12).