Shown with a cast-on count of 22 stitches.  

• Row 1 (RS): *K2tog, k1, ssk, yo, k1, yo, k2tog, k1, ssk, repeat from * (multiple of 9 sts).
• Row 2: *P3, (k1, p1) in next st, p1, (k1, p1) in next st, p3, repeat from * (multiple of 11 sts).
• Row 3: *K2, yo, ssk, yo, k3, yo, k2tog, yo, k2, repeat from * (multiple of 13 sts).
• Row 4: *[P3, p2tog] twice, p3, repeat from * (multiple of 11 sts).
• Row 5: *K4, yo, sl1-k2tog-psso, yo, k4, repeat from *.
• Row 6: Purl.