Shown with a cast-on count of 23 stitches.  

• Rows 1, 3, 7, and 9 (WS): K4, *p3, k3, repeat from * to last st, k1.
• Rows 2 and 8: K1, *p3, k3, repeat from * to last 4 sts, p3, k1.
• Row 4: K1, *p3, sl2-k1-p2sso, repeat from * to last 4 sts, p3, k1 (multiple of 4 sts, plus 5).
• Row 5: K4, *p1, k3, repeat from * to last st, k1.
• Row 6: K1, *p3, (k1, yo, k1) in next st, repeat from * to last 4 sts, p3, k1 (multiple of 6 sts, plus 5).
• Row 10: K2, p2tog, *k1, (k1, yo, k1) in next st, k1, p3tog, repeat from * to last 7 sts, k1, (k1, yo, k1) in next st, k1, p2tog, k2.
• Rows 11, 13, 17, and 19: K1, *p3, k3, repeat from * to last 4 sts, p3, k1.
• Rows 12 and 18: K4, *p3, k3, repeat from * to last st, k1.
• Row 14: K1, *sl2-k1-p2sso, p3, repeat from * to last 4 sts, sl2-k1-p2sso, k1 (multiple of 4 sts, plus 3).
• Row 15: K1, *p1, k3, repeat from * to last 2 sts, p1, k1.
• Row 16: K1, *(k1, yo, k1) in next st, p3, repeat from * to last 2 sts, (k1, yo, k1) in next st, k1 (multiple of 6 sts, plus 5).
• Row 20: K2, kfb, *k1, p3tog, k1, (k1, yo, k1) in next st, repeat from * to last 8 sts, k1, p3tog, k1, kfb, k2.