Shown with a cast-on count of 30 stitches.  

• Row 1 (RS): K30.
• Row 2: P18, p2tog, p1, turn (20 sts).
• Row 3: K8, k2tog, k1, turn (10 sts).
• Row 4: P9, p2tog, p1, turn (11 sts).
• Row 5: K10, ssk, k1, turn (12 sts).
• Row 6: P11, p2tog, p1, turn (13 sts).
• Row 7: K12, ssk, k1, turn (14 sts).
• Row 8: P13, p2tog, p1, turn (15 sts).
• Row 9: K14, ssk, k1, turn (16 sts).
• Row 10: P15, p2tog, p1, turn (17 sts).
• Row 11: K16, ssk, k1, turn (18 sts).
• Row 12: P17, p2tog, turn.
• Row 13: K17, ssk.