Shown with a cast-on count of 41 stitches.  

• Rows 1, 3, 5, and 7 (RS): [K1, p1] 20 times, k1.
• Rows 2, 4, 6, and 8: [P1, k1] 20 times, p1.
• Row 9: [Ssk, yo] 20 times, k1.
• Rows 10, 12, 14, 16, 18, 20, 22, 24, 26, 28, 30, 32, and 34: P1, *k2, p3, repeat from *.
• Rows 11, 15, 19, 23, 27, 31, and 35: *K1, yo, ssk, p2, repeat from * to last st, k1.
• Rows 13, 17, 21, 25, 29, and 33: *K2tog, yo, k1, p2, repeat from * to last st, k1.
• Rows 36, 38, and 40: K18, p3, k20.
• Row 37: K18, p2, k2tog, yo, k1, k18.
• Row 39: K18, p2, k1, yo, ssk, k18.
• Row 41: BO 15 sts, k2, p2, k2tog, yo, k1, k18 (26 sts).
• Row 42: BO 15 sts, k2, p3, k5 (11 sts).
• Row 43: K3, M1L, p2, k1, yo, ssk, M1R, k3 (13 sts).
• Row 44: K4, p3, k2, p1, k3.
• Row 45: K3, M1L, k1, p2, k2tog, yo, k1, p1, M1R, k3 (15 sts).
• Row 46: K5, p3, k2, p2, k3.
• Row 47: K3, M1L, k2, p2, k1, yo, ssk, p2, M1R, k3 (17 sts).
• Row 48: K3, p1, k2, p3, k2, p3, k3.
• Row 49: K3, M1L, k2tog, yo, k1, p2, k2tog, yo, k1, p2, k1, M1R, k3 (19 sts).
• Row 50: K3, p2, k2, p3, k2, p3, k4.
• Row 51: K3, M1L, p1, k1, yo, ssk, p2, k1, yo, ssk, p2, k2, M1R, k3 (21 sts).
• Row 52: K3, p3, k2, p3, k2, p3, k5.
• Row 53: K3, M1L, p2, k2tog, yo, k1, p2, k2tog, yo, k1, p2, k3, M1R, k3 (23 sts).
• Row 54: K4, p3, k2, p3, k2, p3, k2, p1, k3.
• Row 55: K3, M1L, k1, p2, k1, yo, ssk, p2, k1, yo, ssk, p2, k1, yo, ssk, p1, M1R, k3 (25 sts).
• Row 56: K5, p3, k2, p3, k2, p3, k2, p2, k3.
• Row 57: K3, M1L, k2, p2, k2tog, yo, k1, p2, k2tog, yo, k1, p2, k2tog, yo, k1, p2, M1R, k3 (27 sts).
• Row 58: K6, p3, k2, p3, k2, p3, k2, p3, k3.
• Row 59: K3, M1L, k1, yo, ssk, p2, k1, yo, ssk, p2, k1, yo, ssk, p2, k1, yo, ssk, p2, k1, M1R, k3 (29 sts).
• Row 60: K3, p1, k3, p3, k2, p3, k2, p3, k2, p3, k4.
• Row 61: K3, M1L, p1, k2tog, yo, k1, p2, k2tog, yo, k1, p2, k2tog, yo, k1, p2, k2tog, yo, k1, p2, k2, M1R, k3 (31 sts).
• Row 62: K3, p2, k3, p3, k2, p3, k2, p3, k2, p3, k5.
• Row 63: K3, M1L, p2, k1, yo, ssk, p2, k1, yo, ssk, p2, k1, yo, ssk, p2, k1, yo, ssk, p2, k1, yo, ssk, M1R, k3 (33 sts).
• Row 64: K3, p3, k3, p3, k2, p3, k2, p3, k2, p3, k2, p1, k3.
• Row 65: K3, M1L, k1, p2, k2tog, yo, k1, p2, k2tog, yo, k1, p2, k2tog, yo, k1, p2, k2tog, yo, k1, p2, k2tog, yo, k1, p1, M1R, k3 (35 sts).
• Row 66: K4, p3, k3, p3, k2, p3, k2, p3, k2, p3, k2, p2, k3.
• Row 67: K3, M1L, k2, p2, k1, yo, ssk, p2, k1, yo, ssk, p2, k1, yo, ssk, p2, k1, yo, ssk, p2, k1, yo, ssk, p2, M1R, k3 (37 sts).
• Row 68: K5, p3, k3, p3, k2, p3, k2, p3, k2, p3, k2, p3, k3.
• Row 69: K3, M1L, k2tog, yo, k1, p2, k2tog, yo, k1, p2, k2tog, yo, k1, p2, k2tog, yo, k1, p2, k2tog, yo, k1, p2, k2tog, yo, k1, p2, k1, M1R, k3 (39 sts).
• Row 70: K3, p1, k2, p3, k3, p3, k2, p3, k2, p3, k2, p3, k2, p3, k4.
• Row 71: K3, M1L, p1, k1, yo, ssk, p2, k1, yo, ssk, p2, k1, yo, ssk, p2, k1, yo, ssk, p2, k1, yo, ssk, p2, k1, yo, ssk, p2, k1, p1, M1R, k3 (41 sts).
• Rows 72, 74, and 76: K3, p3, k2, p3, k2, p3, k2, p3, k2, p3, k2, p3, k2, p3, k5.
• Row 73: K3, 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, k6.
• Row 75: K3, 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, k1, yo, ssk, k3.