Shown with a cast-on count of 37 stitches.  

• Round 1: [K2tog, k2, incR, k2] 6 times, k1.
• Round 2: K1, [k2, incR, k2, k2tog] 6 times.
• Round 3: [K2tog, k1, (k1, yo, k1) in next st, k2] 6 times, k1 (43 sts).
• Round 4: K1, [k2, (k1, yo, k1) in next st, k2, k2tog] 6 times (49 sts).
• Round 5: [K2tog, k2, (k1, yo, k1) in next st, k3] 6 times, k1 (55 sts).
• Round 6: K1, [k3, (k1, yo, k1) in next st, k3, k2tog] 6 times (61 sts).
• Round 7: [K2tog, k3, (k1, yo, k1) in next st, k4] 6 times, k1 (67 sts).
• Round 8: K1, [k4, (k1, yo, k1) in next st, k4, k2tog] 6 times (73 sts).
• Rounds 9 and 11: [K2tog, k5, incR, k5] 6 times, k1.
• Rounds 10 and 12: K1, [k5, incR, k5, k2tog] 6 times.