Shown with a cast-on count of 12 stitches.  

• Round 1: K12.
• Round 2: *K2, M1R, repeat from * (18 sts).
• Rounds 3, 5, 7, and 9: Knit.
• Round 4: *K3, M1R, repeat from * (24 sts).
• Round 6: *K4, M1R, repeat from * (30 sts).
• Round 8: *K5, M1R, repeat from * (36 sts).
• Round 10: *K6, M1R, repeat from * (42 sts).