Shown with a cast-on count of 12 stitches.  

• Rounds 1, 3, 5, 7, and 9: Knit.
• Round 2: [K2, incL, k2, incR, k2] twice (16 sts).
• Round 4: [K2, incL, k4, incR, k2] twice (20 sts).
• Round 6: [K2, incL, k6, incR, k2] twice (24 sts).
• Round 8: [K2, incL, k8, incR, k2] twice (28 sts).
• Round 10: [K2, incL, k10, incR, k2] twice (32 sts).