Shown with a cast-on count of 25 stitches.  

• Rows 1, 3, 5, and 7 (RS): *Yo, k3, k2tog, k2, yo, ssk, k1, repeat from * to last 5 sts, yo, k3, k2tog.
• Rows 2, 4, 6, and 8: P2tog, p3, yo, *p2, yo, p2tog, p1, p2tog, p3, yo, repeat from *.
• Rows 9, 11, 13, and 15: *Ssk, k3, yo, k2, yo, ssk, k1, repeat from * to last 5 sts, ssk, k3, yo.
• Rows 10, 12, 14, and 16: Yo, p3, p2tog, *p2, yo, p2tog, p1, yo, p3, p2tog, repeat from *.
• Repeat rows 1-16.