Shown with a cast-on count of 40 stitches.  

• Rounds 1-8: [K1, p1] 20 times.
• Rounds 9, 11, 13, 15, 17, and 19: Knit.
• Round 10: K1, M1L, k13, M1R, k1, M1L, k25, M1R (44 sts).
• Round 12: K1, M1L, k15, M1R, k1, M1L, k27, M1R (48 sts).
• Round 14: K1, M1L, k17, M1R, k1, M1L, k29, M1R (52 sts).
• Round 16: K1, M1L, k19, M1R, k1, M1L, k31, M1R (56 sts).
• Round 18: K1, M1L, k21, M1R, k1, M1L, k33, M1R (60 sts).
• Round 20: P1, M1L, p23, M1R, p1, M1L, p35, M1R (64 sts).
• Round 21: K1, BO 25 sts, k37 (39 sts).