Shown with a cast-on count of 38 stitches.  

• Row 1 (RS): P2, *k2, p4, k4, p4, k2, p2, repeat from *.
• Rows 2, 4, 18, and 20: *K2, p2, k4, p4, k4, p2, repeat from * to last 2 sts, k2.
• Rows 3 and 19: P2, *k2, p4, 2/2 LC, p4, k2, p2, repeat from *.
• Row 5: P2, *[2/1 LPC, p2, 2/1 RPC] twice, p2, repeat from *.
• Rows 6 and 16: *K3, [p2, k2] 3 times, p2, k1, repeat from * to last 2 sts, k2.
• Row 7: P2, *p1, 2/1 LPC, 2/1 RPC, p2, 2/1 LPC, 2/1 RPC, p3, repeat from *.
• Rows 8, 10, 12, and 14: *[K4, p4] twice, k2, repeat from * to last 2 sts, k2.
• Row 9: P2, *p2, [2/2 LC, p4] twice, repeat from *.
• Row 11: P2, *p2, [k4, p4] twice, repeat from *.
• Row 13: P2, *p2, 2/2 LC, p4, 2/2 LC, p4, repeat from *.
• Row 15: P2, *p1, 2/1 RPC, 2/1 LPC, p2, 2/1 RPC, 2/1 LPC, p3, repeat from *.
• Row 17: P2, *[2/1 RPC, p2, 2/1 LPC] twice, p2, repeat from *.