Shown with a cast-on count of 16 stitches.  

• Rows 1, 3, 25, and 27 (RS): P2, k2, p8, k2, p2.
• Rows 2, 4, 26, and 28: K2, p2, k8, p2, k2.
• Row 5: P2, k2, p4, incR, incL, p4, k2, p2 (18 sts).
• Row 6: K2, p2, k4, p2, k4, p2, k2.
• Row 7: P2, k2, p4, k1, incR, incL, k1, p4, k2, p2 (20 sts).
• Row 8: K2, p2, k4, p4, k4, p2, k2.
• Rows 9 and 17: P2, *2/2 LPC, 2/2 RPC, repeat from * to last 2 sts, p2.
• Rows 10, 12, 18, and 20: K2, *k2, p4, k2, repeat from * to last 2 sts, k2.
• Rows 11 and 19: P2, *p2, 2/2 RC, p2, repeat from * to last 2 sts, p2.
• Rounds 13 and 21: P2, *2/2 RPC, 2/2 LPC, repeat from * to last 2 sts, p2.
• Rows 14, 16, and 22 (WS): K2, *p2, k4, p2, repeat from * to last 2 sts, k2.
• Row 15: P2, k2, p4, *2/2 LC, p4, repeat from * to last 4 sts, k2, p2.
• Row 23: P2, k2, p4, ssk, k2tog, p4, k2, p2 (18 sts).
• Row 24: K2, p2, k3, ssk, k2tog, k3, p2, k2 (16 sts).
• Repeat rows 9-16.