Shown with a cast-on count of 15 stitches.  

• Row 1 (RS): P3, *k3, yo, p3, repeat from * (multiple of 7 sts, plus 3).
• Row 2: K3, *p4, k3, repeat from *.
• Row 3: P3, *k1, k2tog, yo, k1, p3, repeat from *.
• Row 4: K3, *p2, p2tog, k3, repeat from * (multiple of 6 sts, plus 3).
• Row 5: P3, *k1, yo, k2tog, p3, repeat from *.
• Row 6: K3, *p3, k3, repeat from *.
• Repeat rows 1-6.