Shown with a cast-on count of 22 stitches.  

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