Shown with a cast-on count of 19 stitches.  

• Row 1 (RS): K2, yo, *sl1-k2tog-psso, yo, k3, yo, repeat from * to last 5 sts, sl1-k2tog-psso, yo, k2.
• Rows 2, 4, 6, 8, 10, and 12: Purl.
• Row 3: K1, ssk, yo, *k1, yo, k2tog, k1, ssk, yo, repeat from * to last 4 sts, k1, yo, ssk, k1.
• Row 5: Ssk, yo, k1, *k2, yo, sl1-k2tog-psso, yo, k1, repeat from * to last 4 sts, k2, yo, ssk.
• Rows 7, 9, and 11: K1, yo, ssk, *k1, k2tog, yo, k1, yo, ssk, repeat from * to last 4 sts, k1, ssk, yo, k1.