Shown with a cast-on count of 85 stitches.  

• Row 1 (RS): K85.
• Row 2: P85.
• Row 3: K1, incR, k83, incL, k1 (87 sts).
• Row 4: P87.
• Row 5: K23, k4, BO 33 sts, k3, k23 (54 sts).
• Row 6: P1, incR, p21, p2, p2tog, turn (26 sts).
• Row 7: BO 1 st, k1, k23 (25 sts).
• Row 8: P23, p2tog, turn (24 sts).
• Row 9: K23, incL, k1 (25 sts).