Shown with a cast-on count of 27 stitches.  

• Rows 1 and 9 (RS): Knit.
• Rows 2 and 10: Knit.
• Rows 3 and 5: *K1, yo, k4, k2tog, ssk, k4, yo, repeat from * to last st, k1.
• Rows 4 and 6: K1, purl to last st, k1.
• Row 7: *K1, sl1 wyib, k3, sl1 wyib, k2, sl1 wyib, k3, sl1 wyib, repeat from * to last st, k1.
• Row 8: K1, *sl1 wyif, k3, sl1 wyif, k2, sl1 wyif, k3, sl1 wyif, k1, repeat from *.