Shown with a cast-on count of 19 stitches.  

• Row 1 (RS): K4, *k1, p3, k2, repeat from * to last 3 sts, k3.
• Row 2: P3, *p2, k3, p1, repeat from * to last 4 sts, p4.
• Row 3: K4, *yo, ssk, p1, k2tog, yo, k1, repeat from * to last 3 sts, k3.
• Row 4: P3, *p1, yo, p1, p3tog, p1, yo, repeat from * to last 4 sts, p4.
• Row 5: K4, *k2, yo, sl1-k2tog-psso, yo, k1, repeat from * to last 3 sts, k3.
• Rows 6 and 12: Purl.
• Row 7: K2, p3, *k3, p3, repeat from * to last 2 sts, k2.
• Row 8: P2, k3, *p3, k3, repeat from * to last 2 sts, p2.
• Row 9: K1, yo, ssk, *p1, k2tog, yo, k1, yo, ssk, repeat from * to last 4 sts, p1, k2tog, yo, k1.
• Row 10: P1, yo, p1, *p3tog, p1, yo, p1, yo, p1, repeat from * to last 5 sts, p3tog, p1, yo, p1.
• Row 11: P2, yo, *sl1-k2tog-psso, yo, k3, yo, repeat from * to last 5 sts, sl1-k2tog-psso, yo, k2.
• Repeat rows 1-12.