Shown with a cast-on count of 20 stitches.  

• Row 1 (RS): K1, *p4, sl1 wyib, p4, repeat from * to last st, k1.
• Row 2: P1, *k4, p1, k4, repeat from * to last st, p1.
• Rows 3 and 11: K1, *p3, k1, sl1 wyif, k1, p3, repeat from * to last st, k1.
• Rows 4, 6, 12, and 14: P1, *k3, p3, k3, repeat from * to last st, p1.
• Rows 5 and 13: K1, *p3, k3, p3, repeat from * to last st, k1.
• Row 7: K1, *p2, k1, p1, sl1 wyib, p1, k1, p2, repeat from * to last st, k1.
• Rows 8 and 10: P1, *k2, [p1, k1] twice, p1, k2, repeat from * to last st, p1.
• Row 9: K1, *p2, sl1 wyib, p1, k1, p1, sl1 wyib, p2, repeat from * to last st, k1.