Shown with a cast-on count of 40 stitches.  

• Rows 1 and 3 (RS): K20, k20.
• Rows 2 and 4: K20, k20.
• Row 5: K2tog, k18, k7, turn (26 sts).
• Row 6: P1, p6, p8, turn (15 sts).
• Row 7: K8, k7, k1, k10, ssk (27 sts).
• Row 8: Purl (38 sts).
• Row 9: K2tog, k16, M1R, k1, k1, M1L, k16, ssk.
• Rows 10, 12, 14, 16, 18, 20, 22, 24, 26, 28, 30, 32, 34, and 36: Purl.
• Row 11: K2tog, k17, k17, ssk (36 sts).
• Row 13: K2tog, k15, M1R, k1, k1, M1L, k15, ssk.
• Row 15: K2tog, k16, k16, ssk (34 sts).
• Row 17: K2tog, k14, M1R, knit to last 17 sts, k1, M1L, k14, ssk.
• Row 19: K2tog, k15, k15, ssk (32 sts).
• Row 21: K2tog, k14, k14, ssk (30 sts).
• Row 23: K2tog, k13, k13, ssk (28 sts).
• Row 25: K2tog, k12, k12, ssk (26 sts).
• Row 27: K2tog, k11, k11, ssk (24 sts).
• Row 29: K2tog, k10, k10, ssk (22 sts).
• Row 31: K2tog, k9, k9, ssk (20 sts).
• Row 33: K2tog, k8, k8, ssk (18 sts).
• Row 35: K2tog, k7, k7, ssk (16 sts).
• Row 37: K2tog, k6, k6, ssk (14 sts).