Shown with a cast-on count of 55 stitches.  

• Row 1 (RS): P1, *k2tog, k6, yo, k1, yo, k6, ssk, p1, repeat from *.
• Row 2: K1, *ssk, p5, p3, p5, k2tog, k1, repeat from * (multiple of 16 sts, plus 1).
• Row 3: P1, *k2tog, k4, yo, k1, yo, k1, yo, k1, yo, k4, ssk, p1, repeat from * (multiple of 18 sts, plus 1).
• Row 4: K1, *ssk, p3, p7, p3, k2tog, k1, repeat from * (multiple of 16 sts, plus 1).
• Row 5: P1, *k2tog, k2, [yo, k1] 7 times, yo, k2, ssk, p1, repeat from * (multiple of 22 sts, plus 1).
• Row 6: K1, *ssk, p8, p1, p8, k2tog, k1, repeat from * (multiple of 20 sts, plus 1).
• Row 7: P1, *k2tog, k7, k1, k7, ssk, p1, repeat from * (multiple of 18 sts, plus 1).
• Rows 8 and 14: K1, *p8, p1, p8, k1, repeat from *.
• Rows 9 and 13: P1, *k8, k1, k8, p1, repeat from *.
• Rows 10 and 12: K9, *k1, k17, repeat from * to last 10 sts, k1, k9.
• Row 11: P1, *yo, k2tog, repeat from *.
• Repeat rows 1-14.