Shown with a cast-on count of 18 stitches.  

• Row 1 (RS): *K1, [p3, k1] twice, repeat from *.
• Rows 2, 6, 8, and 12: Purl.
• Row 3: *K1, [sl3 wyif, k1] twice, repeat from *.
• Row 4: *P1, [sl3 wyib, p1] twice, repeat from *.
• Row 5: *K2, dip st, k3, dip st, k2, repeat from *.
• Row 7: *K3, p3, k3, repeat from *.
• Row 9: *K3, sl3 wyif, k3, repeat from *.
• Row 10: *P3, sl3 wyib, p3, repeat from *.
• Row 11: *K4, dip st, k4, repeat from *.