Shown with a cast-on count of 37 stitches.  

• Row 1 (RS): K1, *yo, k4, ssk, k2tog, yo, k1, yo, ssk, k2tog, k4, yo, k1, repeat from *.
• Rows 2, 4, 6, 8, 10, 12, 14, and 16: Purl.
• Row 3: K1, *yo, k2tog, k3, k2tog, k1, yo, k1, yo, k1, ssk, k3, ssk, yo, k1, repeat from *.
• Row 5: K1, *k4, k2tog, k2, yo, k1, yo, k2, ssk, k5, repeat from *.
• Row 7: K1, *k3, k2tog, k3, yo, k1, yo, k3, ssk, k4, repeat from *.
• Row 9: K1, *yo, ssk, k2tog, k4, yo, k1, yo, k4, ssk, k2tog, yo, k1, repeat from *.
• Row 11: K1, *yo, k1, ssk, k3, ssk, yo, k1, yo, k2tog, k3, k2tog, k1, yo, k1, repeat from *.
• Row 13: K1, *yo, k2, ssk, k9, k2tog, k2, yo, k1, repeat from *.
• Row 15: K1, *yo, k3, ssk, k7, k2tog, k3, yo, k1, repeat from *.
• Repeat rows 1-16.