Shown with a cast-on count of 10 stitches.  

• Row 1 (RS): *K2tog, yo, (k1, yo, k1) in next st, yo, ssk, repeat from * (multiple of 7 sts).
• Rows 2, 4, 6, 8, 10, 12, 14, and 16: Purl.
• Row 3: *K2tog, k1, yo, (k1, yo, k1) in next st, yo, k1, ssk, repeat from * (multiple of 9 sts).
• Row 5: *K2tog, k2, yo, (k1, yo, k1) in next st, yo, k2, ssk, repeat from * (multiple of 11 sts).
• Row 7: *K2tog, k3, yo, (k1, yo, k1) in next st, yo, k3, ssk, repeat from * (multiple of 13 sts).
• Row 9: *Yo, ssk, yo, k3, sl2-k1-p2sso, k3, yo, k2tog, yo, repeat from *.
• Row 11: *K2, yo, k3, sl2-k1-p2sso, k3, yo, k2, repeat from *.
• Row 13: *K1, yo, ssk, yo, k2, sl2-k1-p2sso, k2, yo, k2tog, yo, k1, repeat from *.
• Row 15: *K3, yo, k2, sl2-k1-p2sso, k2, yo, k3, repeat from *.
• Row 17: *K2, yo, ssk, yo, k1, sl2-k1-p2sso, k1, yo, k2tog, yo, k2, repeat from *.