Shown with a cast-on count of 25 stitches.  

• Row 1 (RS): K1, *p1, k9, p1, k1, repeat from *.
• Rows 2 and 12: K1, *p1, k1, p7, k1, p1, k1, repeat from *.
• Rows 3 and 11: K1, *p1, k1, p1, k5, [p1, k1] twice, repeat from *.
• Rows 4 and 10: P1, *[p1, k1] twice, p3, k1, p1, k1, p2, repeat from *.
• Row 5: K1, *k2, [p1, k1] 3 times, p1, k3, repeat from *.
• Rows 6 and 8: P1, *p3, [k1, p1] twice, k1, p4, repeat from *.
• Row 7: K1, *k4, p1, k1, p1, k5, repeat from *.
• Row 9: P1, *k2, [p1, k1] 3 times, p1, k3, repeat from *.
• Repeat rows 1-12.