Shown with a cast-on count of 37 stitches.  

• Row 1 (RS): *K2, k2tog, k2, yo, k1, yo, k2, ssk, k1, repeat from * to last st, k1.
• Rows 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24, and 26: Purl.
• Rows 3 and 19: *K1, k2tog, k2, yo, k3, yo, k2, ssk, repeat from * to last st, k1.
• Rows 5 and 17: K2tog, *k2, yo, k5, yo, k2, sl1-k2tog-psso, repeat from * to last 11 sts, k2, yo, k5, yo, k2, ssk.
• Rows 7 and 15: *K3, yo, k2, sl1-k2tog-psso, k2, yo, k2, repeat from * to last st, k1.
• Rows 9 and 13: *K2, yo, k2, ssk, k1, k2tog, k2, yo, k1, repeat from * to last st, k1.
• Row 11: *K1, yo, k2, ssk, k3, k2tog, k2, yo, repeat from * to last st, k1.
• Row 21: K1, *k1, k2tog, k2, yo, k1, yo, k2, ssk, k2, repeat from *.
• Row 23: K1, *k2tog, k3, yo, k1, yo, k3, ssk, k1, repeat from *.
• Row 25: K2tog, k4, yo, k1, *yo, k4, sl1-k2tog-psso, k4, yo, k1, repeat from * to last 6 sts, yo, k4, ssk.
• Row 27: K6, yo, k1, *yo, k11, yo, k1, repeat from * to last 6 sts, yo, k6 (multiple of 14 sts, plus 15).
• Repeat rows 25-26.