Shown with a cast-on count of 80 stitches.  

• Rounds 1-6: [K1, p1] 40 times.
• Rounds 7, 9, 11, 13, 15, and 19: Knit.
• Round 8: K1, M1L, k13, M1R, k1, M1L, k25, M1R, k1, M1L, k13, M1R, k1, M1L, k25, M1R (88 sts).
• Round 10: K1, M1L, k15, M1R, k1, M1L, k27, M1R, k1, M1L, k15, M1R, k1, M1L, k27, M1R (96 sts).
• Round 12: K1, M1L, k17, M1R, k1, M1L, k29, M1R, k1, M1L, k17, M1R, k1, M1L, k29, M1R (104 sts).
• Round 14: K1, M1L, k19, M1R, k1, M1L, k31, M1R, k1, M1L, k19, M1R, k1, M1L, k31, M1R (112 sts).
• Round 16: K1, M1L, k21, M1R, k1, M1L, k33, M1R, k1, M1L, k21, M1R, k1, M1L, k33, M1R (120 sts).
• Round 17: K1, k23, k37, k23, k36.
• Round 18: K1, M1L, k23, M1R, k1, M1L, k35, M1R, k1, M1L, k23, M1R, k1, M1L, k35, M1R (128 sts).
• Round 20: K1, p25, k39, p25, k38.
• Round 21: K1, M1L, k25, M1R, k1, M1L, k37, M1R, k1, M1L, k25, M1R, k1, M1L, k37, M1R (136 sts).
• Round 22: K1, p27, k41, p27, k40.
• Round 23: K1, M1L, k27, M1R, k1, M1L, k39, M1R, k1, M1L, k27, M1R, k1, M1L, k39, M1R (144 sts).
• Round 24: K1, p31, k40, p31, k41.
• Round 25: BO 31 sts, k40, BO 31 sts, k40 (82 sts).