Shown with a cast-on count of 37 stitches.  

• Row 1 (RS): Yo, ssk, *k1, yo, k3, yo, k3tog, yo, ssk, yo, k2, k3tog, k2, yo, repeat from * to last 3 sts, k3.
• Rows 2, 4, 6, 8, 10, and 12: Yo, p2tog, purl.
• Row 3: Yo, ssk, *k1, yo, k5, yo, k3tog, yo, k2, k3tog, k2, yo, repeat from * to last 3 sts, k3.
• Row 5: Yo, ssk, *k1, yo, k2, k3tog, k2, yo, ssk, yo, k1, k3tog, [k1, yo] twice, repeat from * to last 3 sts, k3.
• Row 7: Yo, ssk, *k1, yo, k2, k3tog, k2, yo, ssk, yo, k3tog, yo, k3, yo, repeat from * to last 3 sts, k3.
• Row 9: Yo, ssk, *k1, yo, k2, k3tog, k2, yo, k3tog, yo, k5, yo, repeat from * to last 3 sts, k3.
• Row 11: Yo, ssk, *[k1, yo] twice, k1, k3tog, k1, yo, ssk, yo, k2, k3tog, k2, yo, repeat from * to last 3 sts, k3.