Shown with a cast-on count of 12 stitches.  

• Row 1 (RS): Sl1 wyib, k1, [yo, k2tog, k1] 3 times, yo, k1 (13 sts).
• Row 2: K13.
• Row 3: Sl1 wyib, k2, [yo, k2tog, k1] 3 times, yo, k1 (14 sts).
• Row 4: K14.
• Row 5: Sl1 wyib, k3, [yo, k2tog, k1] 3 times, yo, k1 (15 sts).
• Row 6: K15.
• Row 7: Sl1 wyib, k4, [yo, k2tog, k1] 3 times, yo, k1 (16 sts).
• Row 8: K16.
• Row 9: Sl1 wyib, k5, [yo, k2tog, k1] 3 times, yo, k1 (17 sts).
• Row 10: K17.
• Row 11: Sl1 wyib, k6, [yo, k2tog, k1] 3 times, yo, k1 (18 sts).
• Row 12: BO 6 sts, k11 (12 sts).