Shown with a cast-on count of 37 stitches.  

• Rows 1, 3, 10, and 12 (RS): P1, *[k2, p2] twice, k1, [p2, k2] twice, p1, repeat from *.
• Rows 2, 4, and 11: K1, *[p2, k2] twice, p1, [k2, p2] twice, k1, repeat from *.
• Rows 5, 7, 14, and 16: [P2, k2] twice, *p3, k2, p2, k2, repeat from * to last 2 sts, p2.
• Rows 6, 8, 13, and 15: [K2, p2] twice, *k3, p2, k2, p2, repeat from * to last 2 sts, k2.
• Row 9: K1, *[p2, k2] twice, p1, [k2, p2] twice, k1, repeat from *.