Shown with a cast-on count of 38 stitches.  

• Rows 1, 3, 5, 7, 9, 11, and 13 (WS): Purl.
• Rows 2, 4, 6, and 8: *K1, k2tog, k2, yo, k1, yo, k2, sl2-k1-p2sso, k2, yo, k1, yo, k2, ssk, k1, repeat from *.
• Row 10: *K1, yo, k17, yo, k1, repeat from * (multiple of 21 sts).
• Row 12: *K1, yo, k19, yo, k1, repeat from * (multiple of 23 sts).