Shown with a cast-on count of 40 stitches.  

• Row 1 (WS): [P1, k1] 20 times.
• Rows 2 and 10: *K1, p1, repeat from *.
• Rows 3, 9, and 11: *P1, k1, repeat from *.
• Rows 4, 6, and 8: K1, p1, knit to last 3 sts, p1, k1, p1.
• Row 5: P1, k1, p1, *yo, p2tog, repeat from * to last 3 sts, k1, p1, k1.
• Row 7: P1, k1, p1, *1/1 LC, repeat from * to last 3 sts, k1, p1, k1.
• Repeat rows 4-7.