Shown with a cast-on count of 16 stitches.  

• Rounds 1 and 9: P1, *k1, yo, k5, yo, k1, repeat from * to last st, p1 (multiple of 9 sts, plus 2).
• Rounds 3 and 11: P1, *k1, yo, k7, yo, k1, repeat from * to last st, p1 (multiple of 11 sts, plus 2).
• Round 5: P1, *k1, yo, k1, yo, k9tog, repeat from * to last st, p1 (multiple of 5 sts, plus 2).
• Rounds 7 and 15: P1, *k1, yo, k3, yo, k1, repeat from * to last st, p1 (multiple of 7 sts, plus 2).
• Round 13: P1, *k9tog, yo, k1, yo, k1, repeat from * to last st, p1 (multiple of 5 sts, plus 2).