Shown with a cast-on count of 20 stitches.  

• Round 1: [K2, p2] 5 times.
• Round 2: Kfb, pfb, k2, p2, k2, pfb, kfb, pfb, kfb, p2, k2, p2, kfb, pfb (28 sts).
• Round 3: Pfb, kfb, p2, k2, p2, k2, p2, kfb, pfb, kfb, pfb, k2, p2, k2, p2, k2, pfb, kfb (36 sts).
• Round 4: Pfb, kfb, p2, k2, p2, k2, p2, k2, p2, kfb, pfb, kfb, pfb, k2, p2, k2, p2, k2, p2, k2, pfb, kfb (44 sts).
• Round 5: Kfb, pfb, k2, p2, k2, p2, k2, p2, k2, p2, k2, pfb, kfb, pfb, kfb, p2, k2, p2, k2, p2, k2, p2, k2, p2, kfb, pfb (52 sts).