Shown with a cast-on count of 42 stitches.  

• Row 1 (RS): [K1, p1] 21 times.
• Rows 2, 4, 6, 8, 100, 102, 104, and 106: *P1, k1, repeat from *.
• Rows 3, 5, 7, 101, 103, 105, and 107: *P1, k1, repeat from *.
• Rows 9 and 99: *K2tog, yo, repeat from * to last 2 sts, k2.
• Rows 10, 12, 14, 16, 18, 20, 22, 24, 26, 28, 30, 32, and 34: *K2, p3, repeat from * to last 2 sts, k2.
• Rows 11, 15, 19, 23, 27, 31, 35, 75, 79, 83, 87, 91, and 95: P2, *k1, yo, ssk, p2, repeat from *.
• Rows 13, 17, 21, 25, 29, 33, 77, 81, 85, 89, 93, and 97: P2, *k2tog, yo, k1, p2, repeat from *.
• Rows 36, 38, and 40: K17, p3, k2, p3, k17.
• Row 37: K17, k2tog, yo, k1, p2, k2tog, yo, k1, k17.
• Row 39: K17, k1, yo, ssk, p2, k1, yo, ssk, k17.
• Row 41: BO 14 sts, k2, k2tog, yo, k1, p2, k2tog, yo, k1, k17 (28 sts).
• Row 42: BO 14 sts, k5, p3, k5 (14 sts).
• Row 43: K3, M1L, k1, yo, ssk, p2, k1, yo, ssk, M1R, k3 (16 sts).
• Row 44: K4, p3, k2, p3, k4.
• Row 45: K3, M1L, p1, k2tog, yo, k1, p2, k2tog, yo, k1, p1, M1R, k3 (18 sts).
• Row 46: K5, p3, k2, p3, k5.
• Row 47: K3, M1L, p2, k1, yo, ssk, p2, k1, yo, ssk, p2, M1R, k3 (20 sts).
• Row 48: K3, p1, k2, p3, k2, p3, k2, p1, k3.
• Row 49: K3, M1L, k1, p2, k2tog, yo, k1, p2, k2tog, yo, k1, p2, k1, M1R, k3 (22 sts).
• Row 50: K3, p2, k2, p3, k2, p3, k2, p2, k3.
• Row 51: K3, M1L, k2, p2, k1, yo, ssk, p2, k1, yo, ssk, p2, k2, M1R, k3 (24 sts).
• Row 52: K3, p3, k2, p3, k2, p3, k2, p3, k3.
• Row 53: K3, M1L, k2tog, yo, k1, p2, k2tog, yo, k1, p2, k2tog, yo, k1, p2, k2tog, yo, k1, M1R, k3 (26 sts).
• Row 54: K4, p3, k2, p3, k2, p3, k2, p3, k4.
• Row 55: K3, M1L, p1, k1, yo, ssk, p2, k1, yo, ssk, p2, k1, yo, ssk, p2, k1, yo, ssk, p1, M1R, k3 (28 sts).
• Row 56: K5, p3, k2, p3, k2, p3, k2, p3, k5.
• Row 57: K3, M1L, p2, k2tog, yo, k1, p2, k2tog, yo, k1, p2, k2tog, yo, k1, p2, k2tog, yo, k1, p2, M1R, k3 (30 sts).
• Row 58: K3, p1, k2, p3, k2, p3, k2, p3, k2, p3, k2, p1, k3.
• Row 59: K3, M1L, k1, p2, k1, yo, ssk, p2, k1, yo, ssk, p2, k1, yo, ssk, p2, k1, yo, ssk, p2, k1, M1R, k3 (32 sts).
• Row 60: K3, p2, k2, p3, k2, p3, k2, p3, k2, p3, k2, p2, k3.
• Row 61: K3, M1L, k2, p2, k2tog, yo, k1, p2, k2tog, yo, k1, p2, k2tog, yo, k1, p2, k2tog, yo, k1, p2, k2, M1R, k3 (34 sts).
• Row 62: K3, p3, k2, p3, k2, p3, k2, p3, k2, p3, k2, p3, k3.
• Row 63: K3, M1L, k1, yo, ssk, p2, k1, yo, ssk, p2, k1, yo, ssk, p2, k1, yo, ssk, p2, k1, yo, ssk, p2, k1, yo, ssk, M1R, k3 (36 sts).
• Row 64: K4, p3, k2, p3, k2, p3, k2, p3, k2, p3, k2, p3, k4.
• Row 65: K3, M1L, p1, k2tog, yo, k1, p2, k2tog, yo, k1, p2, k2tog, yo, k1, p2, k2tog, yo, k1, p2, k2tog, yo, k1, p2, k2tog, yo, k1, p1, M1R, k3 (38 sts).
• Row 66: K5, p3, k2, p3, k2, p3, k2, p3, k2, p3, k2, p3, k5.
• Row 67: K3, M1L, p2, k1, yo, ssk, p2, k1, yo, ssk, p2, k1, yo, ssk, p2, k1, yo, ssk, p2, k1, yo, ssk, p2, k1, yo, ssk, p2, M1R, k3 (40 sts).
• Row 68: K3, p1, k2, p3, k2, p3, k2, p3, k2, p3, k2, p3, k2, p3, k2, p1, k3.
• Row 69: K3, M1L, p3, k2tog, yo, k1, p2, k2tog, yo, k1, p2, k2tog, yo, k1, p2, k2tog, yo, k1, p2, k2tog, yo, k1, p2, k2tog, yo, k1, p3, M1R, k3 (42 sts).
• Rows 70, 72, 74, 76, 78, 80, 82, 84, 86, 88, 90, 92, 94, 96, and 98: K3, p2, k2, p3, k2, p3, k2, p3, k2, p3, k2, p3, k2, p3, k2, p2, k3.
• Row 71: K3, k2, p2, k1, yo, ssk, p2, k1, yo, ssk, p2, k1, yo, ssk, p2, k1, yo, ssk, p2, k1, yo, ssk, p2, k1, yo, ssk, p2, k2, k3.
• Row 73: K3, k2, p2, k2tog, yo, k1, p2, k2tog, yo, k1, p2, k2tog, yo, k1, p2, k2tog, yo, k1, p2, k2tog, yo, k1, p2, k2tog, yo, k1, p2, k2, k3.
• Row 108: BO (0 sts).