Shown with a cast-on count of 23 stitches.  

• Row 3 (RS): K2, *yo, ssk, k1, yo, ssk, k1 tbl, repeat from * to last 3 sts, yo, ssk, k1.
• Rows 4, 6, 8, 10, 12, 14, 16, and 18: Purl.
• Row 5: K3, *k2tog, yo, k1 tbl, yo, ssk, k1 tbl, repeat from * to last 2 sts, k2.
• Row 7: K2, k2tog, *yo, sl2-k1-p2sso, yo, sl1-k2tog-psso, repeat from * to last 7 sts, yo, sl2-k1-p2sso, yo, ssk, k2 (multiple of 4 sts, plus 9).
• Row 9: K3, *k1 tbl, yo, k1, yo, k1 tbl, k1, repeat from * to last 2 sts, k2 (multiple of 6 sts, plus 5).
• Row 11: K2, *yo, ssk, k1 tbl, yo, ssk, k1, repeat from * to last 3 sts, yo, ssk, k1.
• Row 13: *K2tog, yo, k1 tbl, yo, ssk, k1 tbl, repeat from * to last 5 sts, k2tog, yo, k1 tbl, yo, ssk.
• Row 15: K1, *yo, sl2-k1-p2sso, yo, sl1-k2tog-psso, repeat from * to last 4 sts, yo, sl2-k1-p2sso, yo, k1 (multiple of 4 sts, plus 5).
• Row 17: K1, k1 tbl, *k1, yo, k1 tbl, k1, k1 tbl, yo, repeat from * to last 3 sts, k1, k1 tbl, k1 (multiple of 6 sts, plus 5).