Shown with a cast-on count of 27 stitches.  

• Rows 1 and 7 (WS): Purl.
• Rows 2 and 6: K4, *yo, sl1-k2tog-psso, yo, k5, repeat from * to last 7 sts, yo, sl1-k2tog-psso, yo, k4.
• Rows 3 and 5: P3, *yo, p2tog, p1, p2tog tbl, yo, p3, repeat from *.
• Row 4: K2, *yo, ssk, yo, sl1-k2tog-psso, yo, k2tog, yo, k1, repeat from * to last st, k1.
• Rows 8 and 12: K1, k2tog, *yo, k5, yo, sl1-k2tog-psso, repeat from * to last 8 sts, yo, k5, yo, ssk, k1.
• Rows 9 and 11: P2, *p2tog tbl, yo, p3, yo, p2tog, p1, repeat from * to last st, p1.
• Row 10: K1, k2tog, *yo, k2tog, yo, k1, yo, ssk, yo, sl1-k2tog-psso, repeat from * to last 8 sts, yo, k2tog, yo, k1, [yo, ssk] twice, k1.