Shown with a cast-on count of 57 stitches.  

• Rows 18, 20, 22, 24, 26, 28, 30, 32, 34, 36, 38, 40, 42, 44, 46, 48, 50, and 52 (RS): K1, [brSl, k1] 28 times.
• Rows 19, 21, 23, 25, 37, and 53: BrSl, k3tog, [[brSl, k1] 4 times, brSl, 1-to-5 inc, brSl, k1, brSl, k5tog] twice, [brSl, k1] 4 times, brSl, 1-to-5 inc, brSl, k1, brSl, k3tog, brSl.
• Rows 27, 29, 31, 33, 43, and 47: BrSl, k3tog, [brSl, k1, brSl, 1-to-5 inc, [brSl, k1] 4 times, brSl, k5tog] twice, brSl, k1, brSl, 1-to-5 inc, [brSl, k1] 4 times, brSl, k3tog, brSl.
• Row 35: BrSl, k3tog, [[brSl, k1] 5 times, brSl, 1-to-5 inc, brSl, k5tog] twice, [brSl, k1] 5 times, brSl, 1-to-5 inc, brSl, k3tog, brSl.
• Rows 39 and 51: BrSl, k3tog, [brSl, [k1, brSl] 3 times, 1-to-5 inc, [brSl, k1] twice, brSl, k5tog] twice, brSl, [k1, brSl] 3 times, 1-to-5 inc, [brSl, k1] twice, brSl, k3tog, brSl.
• Rows 41 and 49: BrSl, k3tog, [brSl, [k1, brSl] twice, 1-to-5 inc, [brSl, k1] 3 times, brSl, k5tog] twice, brSl, [k1, brSl] twice, 1-to-5 inc, [brSl, k1] 3 times, brSl, k3tog, brSl.
• Row 45: BrSl, k3tog, [brSl, 1-to-5 inc, [brSl, k1] 5 times, brSl, k5tog] twice, brSl, 1-to-5 inc, [brSl, k1] 5 times, brSl, k3tog, brSl.