Shown with a cast-on count of 7 stitches.  

• Rows 1 and 5 (RS): K2, *yo, k2tog, repeat from * to last st, k1.
• Rows 2, 6, 10, and 14: P1, pfb, purl (1 more st).
• Rows 3 and 7: K2, *yo, k2tog, repeat from * to last 2 sts, yo, k2 (multiple of 2 sts, plus 5).
• Rows 4, 8, 12, and 16: Purl.
• Rows 9 and 13: K1, *ssk, yo, repeat from * to last 2 sts, k2.
• Rows 11 and 15: K1, *ssk, yo, repeat from * to last 3 sts, k1, yo, k2 (multiple of 2 sts, plus 5).