Shown with a cast-on count of 2 stitches.  

• Round 1: K2.
• Round 2: 1-To-5 inc, brSl (6 sts).
• Rounds 3-5: [K1, brSl] 3 times.
• Round 6: K1, brSl, 1-to-5 inc, brSl, k1, brSl (10 sts).
• Rounds 7-9: [K1, brSl] 5 times.
• Round 10: [K1, brSl] twice, 1-to-5 inc, brSl, [k1, brSl] twice (14 sts).
• Rounds 11-13: [K1, brSl] 7 times.
• Round 14: (K1, yo, k1) in next st, brSl, [k1, brSl] 5 times, (k1, yo, k1) in next st, brSl (18 sts).
• Rounds 15-17: [K1, brSl] 9 times.
• Round 18: 1-To-5 inc, brSl, k3tog, brSl, [k1, brSl] 3 times, k3tog, brSl, 1-to-5 inc, brSl (22 sts).
• Rounds 19-21: [K1, brSl] 11 times.
• Round 22: K1, brSl, 1-to-5 inc, brSl, k1, brSl, k3tog, brSl, k1, brSl, k3tog, brSl, k1, brSl, 1-to-5 inc, brSl, k1, brSl (26 sts).
• Rounds 23-25: [K1, brSl] 13 times.
• Round 26: [K1, brSl] twice, 1-to-5 inc, brSl, [k1, brSl] twice, k5tog, brSl, [k1, brSl] twice, 1-to-5 inc, brSl, [k1, brSl] twice (30 sts).
• Rounds 27-29: [K1, brSl] 15 times.
• Round 30: (K1, yo, k1) in next st, brSl, [k1, brSl] 13 times, (k1, yo, k1) in next st, brSl (34 sts).
• Rounds 31-33: [K1, brSl] 17 times.
• Round 34: 1-To-5 inc, brSl, k3tog, brSl, [k1, brSl] 3 times, k3tog, brSl, 1-to-5 inc, brSl, k3tog, brSl, [k1, brSl] 3 times, k3tog, brSl, 1-to-5 inc, brSl (38 sts).
• Rounds 35-37: [K1, brSl] 19 times.
• Round 38: K1, brSl, 1-to-5 inc, brSl, k1, brSl, k3tog, brSl, k1, brSl, k3tog, brSl, k1, brSl, 1-to-5 inc, brSl, k1, brSl, k3tog, brSl, k1, brSl, k3tog, brSl, k1, brSl, 1-to-5 inc, brSl, k1, brSl (42 sts).
• Rounds 39-41: [K1, brSl] 21 times.
• Round 42: [K1, brSl] twice, 1-to-5 inc, brSl, [k1, brSl] twice, k5tog, brSl, [k1, brSl] twice, 1-to-5 inc, brSl, [k1, brSl] twice, k5tog, brSl, [k1, brSl] twice, 1-to-5 inc, brSl, [k1, brSl] twice (46 sts).
• Rounds 43-45: [K1, brSl] 23 times.