Shown with a cast-on count of 23 stitches.  

• Row 1 (RS): K4, *p2tog, yo, p1, k3, repeat from * to last st, k1.
• Rows 2, 4, and 12: P4, *k3, p3, repeat from * to last st, k1.
• Row 3: K4, *p1, yo, p2tog, k3, repeat from * to last st, k1.
• Row 5: K2, k2tog, *[p1, yo] twice, p1, sl1-k2tog-psso, repeat from * to last 7 sts, [p1, yo] twice, p1, ssk, k2.
• Rows 6, 8, and 10: K4, *p3, k3, repeat from * to last st, k1.
• Row 7: P2, yo, p2tog, *k3, p1, yo, p2tog, repeat from * to last st, p1.
• Row 9: P1, p2tog, yo, p1, *k3, p2tog, yo, p1, repeat from * to last st, p1.
• Row 11: P3, yo, p1, *sl1-k2tog-psso, [p1, yo] twice, p1, repeat from * to last 7 sts, sl1-k2tog-psso, p1, yo, p3.