Shown with a cast-on count of 20 stitches.  

• Row 1 (RS): Yo, k2tog, *k2, k2tog, yo, yo, k2tog, k2, repeat from * to last 2 sts, k2.
• Rows 2 and 8: Yo, k2tog, *k2, k2tog, yo, yo, k2tog, k2, repeat from * to last 2 sts, k2.
• Row 3: Yo, k2tog, *k2, yo, yo, k2tog, k2tog, yo, yo, k2, repeat from * to last 2 sts, k2 (multiple of 10 sts, plus 4).
• Rows 4 and 6: Yo, k2tog, *k1, [k2tog, yo, yo, k2tog] twice, k1, repeat from * to last 2 sts, k2.
• Row 5: Yo, k2tog, *k1, [k2tog, yo, yo, k2tog] twice, k1, repeat from * to last 2 sts, k2.
• Row 7: Yo, k2tog, *k1, k2tog, k2tog, yo, yo, k2tog, k2tog, k1, repeat from * to last 2 sts, k2 (multiple of 8 sts, plus 4).