Shown with a cast-on count of 37 stitches.  

• Rows 1, 5, 9, 13, 17, and 21 (WS): Purl.
• Rows 2, 6, 10, 14, 18, and 22: Knit.
• Rows 3, 7, 11, 15, 19, and 23: Knit.
• Row 4: Yo, k1, yo, k2tog, yo, *[k2tog] 3 times, [yo, k1] 5 times, yo, [k2tog] 3 times, repeat from * (multiple of 17 sts, plus 5).
• Row 8: Yo, k2, yo, k1, yo, k2, *[k2tog] 3 times, [yo, k1] 5 times, yo, [k2tog] 3 times, repeat from * (multiple of 17 sts, plus 8).
• Row 12: Yo, k1, yo, k1, yo, k1, yo, k1, yo, k2, k2tog, *[k2tog] 3 times, [yo, k1] 5 times, yo, [k2tog] 3 times, repeat from * (multiple of 17 sts, plus 12).
• Row 16: Yo, k2, yo, k1, yo, k1, yo, k1, yo, k1, yo, k2tog, k2tog, k2tog, *[k2tog] 3 times, [yo, k1] 5 times, yo, [k2tog] 3 times, repeat from * (multiple of 17 sts, plus 15).
• Row 20: Yo, k2, k2tog, yo, k1, yo, k1, yo, k1, yo, k1, yo, k1, yo, k2tog, k2tog, k2tog, *[k2tog] 3 times, [yo, k1] 5 times, yo, [k2tog] 3 times, repeat from * (multiple of 17 sts, plus 18).
• Row 24: Yo, k1, yo, *[k2tog] 3 times, [yo, k1] 5 times, yo, [k2tog] 3 times, repeat from * (multiple of 17 sts, plus 3).
• Repeat rows 1-24.