Shown with a cast-on count of 0 stitches.  

• Row 0 (RS): CO 3 sts (3 sts).
• Row 1 (RS): Yo, ssk, yo, knit (4 sts).
• Row 2: Yo, p2tog, yo, purl (5 sts).
• Row 3: Yo, ssk, yo, knit (6 sts).
• Rows 4, 6, 8, 10, 12, 14, 16, 18, and 20: Yo, p2tog, purl.
• Row 5: Yo, ssk, [(k1, yo, k1) in next st] 3 times, k1 (12 sts).
• Row 7: Yo, ssk, yo, k3, yo, sl2-k1-p2sso, yo, k3, yo, k1 (14 sts).
• Row 9: Yo, ssk, yo, (k1, yo, k1) in next st, sl2-k1-p2sso, k3, sl2-k1-p2sso, (k1, yo, k1) in next st, yo, k1 (16 sts).
• Row 11: Yo, ssk, yo, k1, yo, k3, ssk, k1, k2tog, k3, yo, k1, yo, k1 (18 sts).
• Row 13: Yo, ssk, [yo, k1] 3 times, yo, [sl2-k1-p2sso] 3 times, [yo, k1] 3 times, yo, k1 (20 sts).
• Row 15: Yo, ssk, yo, k2tog, yo, knit to last 3 sts, yo, ssk, yo, k1 (22 sts).
• Row 17: Yo, ssk, yo, k5, sl2-k1-p2sso, [(k1, yo, k1) in next st] 3 times, sl2-k1-p2sso, k5, yo, k1 (26 sts).
• Row 19: Yo, ssk, yo, k2, ssk, k1, k2tog, [k3, yo] twice, k3, ssk, k1, k2tog, k2, yo, k1.