Shown with a cast-on count of 20 stitches.  

• Rows 1 and 3 (RS): K1, *k3, yo, k3, yo, k3, repeat from * to last st, k1 (multiple of 11 sts, plus 2).
• Rows 2 and 4: P1, *p2tog, p7, p2tog, repeat from * to last st, p1 (multiple of 9 sts, plus 2).
• Rows 5 and 7: K1, *[ssk] twice, yo, k1, yo, [k2tog] twice, repeat from * to last st, k1 (multiple of 7 sts, plus 2).
• Rows 6 and 8: P1, *p3, yo, p1, yo, p3, repeat from * to last st, p1 (multiple of 9 sts, plus 2).