Shown with a cast-on count of 40 stitches.  

• Row 1 (RS): K3, yo, k2tog, k1, yo, kfb, yo, k2, ssk, p1, k2tog, k3, yo, k2tog, yo, k2, p1, k2tog, k1, yo, k2tog, yo, k3, yo, k4, [yo, k2tog] twice, yo, k2 (44 sts).
• Row 2: Yo, p2tog, p18, [k1, p9] twice, k4.
• Row 3: K3, yo, k2tog, k1, yo, [kfb] 3 times, yo, k2, ssk, p1, k2tog, k3, yo, k2tog, yo, ssk, p1, k2tog, yo, k2tog, [yo, k5] twice, [yo, k2tog] twice, yo, k2 (49 sts).
• Row 4: Yo, p2tog, p20, k1, p8, k1, p13, k4.
• Row 5: K3, yo, [k2tog] twice, yo, k6, yo, k2, ssk, p1, k2tog, k3, yo, k2tog, yo, k3tog, yo, k2tog, yo, k7, yo, k6, [yo, k2tog] twice, yo, k2 (50 sts).
• Row 6: Yo, p2tog, p30, k1, p13, k4.
• Row 7: K3, yo, [k2tog] twice, yo, k6, yo, k2, ssk, p1, k2tog, k3, yo, k5tog, yo, k4, p1, k4, yo, k4, ssk, yo, k1, [yo, k2tog] twice, yo, k2 (49 sts).
• Row 8: Yo, p2tog, p17, k1, p11, k1, p13, k4.
• Row 9: K3, yo, [k2tog] twice, yo, k6, yo, k2, ssk, p1, k2tog, k2, yo, k2tog, yo, k3, ssk, p1, k2tog, k3, yo, k3, ssk, yo, k3, [yo, k2tog] twice, yo, k2.
• Row 10: Yo, p2tog, p18, k1, p10, k1, p4, [kfb] 6 times, p3, k4 (55 sts).
• Row 11: K3, yo, [k2tog] twice, yo, p12, yo, k2, ssk, p1, k2tog, k1, yo, k2tog, yo, k3, ssk, p1, k2tog, k3, yo, k4, yo, k2tog, k3, [yo, k2tog] twice, yo, k2.
• Row 12: Yo, p2tog, p19, k1, p9, k1, p4, [k2tog] 6 times, p3, k4 (49 sts).
• Row 13: K3, yo, [k2tog] twice, yo, p6, yo, k2, ssk, p1, k2, yo, k2tog, yo, k3, ssk, p1, k2tog, k3, yo, k4, yo, k2tog, k1, ssk, [yo, k2tog] 3 times, k1 (48 sts).
• Row 14: Yo, p2tog, p18, k1, p9, k1, p4, [k2tog] 3 times, p3, k4 (45 sts).
• Row 15: K3, yo, k2tog, [k1, yo] twice, p3tog, yo, k2, ssk, p1, k2, yo, k2tog, yo, k3, ssk, p1, k2tog, k2, yo, kfb, yo, k5, yo, k3tog, [yo, k2tog] 3 times, k1 (46 sts).
• Row 16: Yo, p2tog, p19, k1, p9, k1, p10, k4.
• Row 17: K3, yo, k2tog, k1, yo, k3, yo, k2tog, yo, k1, ssk, p1, k2, yo, k2tog, yo, k3, ssk, p1, k2tog, k2, yo, [kfb] 3 times, yo, k5, k2tog, [yo, k2tog] 3 times, k1 (50 sts).
• Row 18: Yo, p2tog, p22, k1, p9, k1, p11, k4.
• Row 19: K3, yo, k2tog, k1, yo, k5, yo, k2tog, yo, ssk, p1, [k2tog, yo] twice, k3, ssk, p1, k2tog, k2, yo, k6, yo, k2tog, k3, k2tog, [yo, k2tog] 3 times, k1 (49 sts).
• Row 20: Yo, p2tog, p21, k1, p8, k1, p12, k4.
• Row 21: K3, yo, k2tog, k1, yo, k7, yo, k2tog, yo, k3tog, yo, k2tog, yo, k3, ssk, p1, k2tog, k2, yo, k6, yo, k2tog, k2, k2tog, [yo, k2tog] 3 times, k1 (48 sts).
• Row 22: Yo, p2tog, p20, k1, p21, k4.
• Row 23: K3, yo, k2tog, k1, yo, k4, p1, k4, yo, k5tog, yo, k3, ssk, p1, k2tog, k2, yo, k6, yo, k2tog, k3, [yo, k2tog] 3 times, k1 (46 sts).
• Row 24: Yo, p2tog, p10, [kfb] 6 times, p4, k1, p11, k1, p7, k4 (52 sts).
• Row 25: K3, yo, k2tog, k1, yo, k3, ssk, p1, k2tog, k3, yo, k2tog, yo, k2, ssk, p1, k2tog, k2, yo, p12, yo, k2tog, k3, [yo, k2tog] 3 times, k1 (51 sts).
• Row 26: Yo, p2tog, p10, [k2tog] 6 times, p4, k1, p10, k1, p7, k4 (45 sts).
• Row 27: K3, yo, k2tog, k1, yo, k3, ssk, p1, k2tog, k3, yo, k2tog, yo, k1, ssk, p1, k2tog, k2, yo, p6, yo, k2tog, k1, k2tog, [yo, k2tog] 3 times, k1 (43 sts).
• Row 28: Yo, p2tog, p9, [k2tog] 3 times, p4, k1, p9, k1, p7, k4 (40 sts).
• Row 29: K3, yo, k2tog, k1, yo, k3, ssk, p1, k2tog, k3, yo, k2tog, yo, k2, p1, k2tog, k2, yo, p3tog, yo, k1, yo, k3, [yo, k2tog] 3 times, k1.
• Row 30: Yo, p2tog, p16, k1, p9, k1, p7, k4.
• Row 31: K3, yo, k2tog, k1, yo, k28, yo, k2tog, yo, k2tog, yo, k2 (42 sts).
• Row 32: Yo, p2tog, p35, k2, w&t (39 sts).
• Row 33: K33, [yo, k2tog] twice, yo, k2 (40 sts).
• Row 34: Yo, p2tog, p34, w&t (36 sts).
• Row 35: K30, [yo, k2tog] twice, yo, k2 (37 sts).
• Row 36: Yo, p2tog, p29, w&t (31 sts).
• Row 37: K22, ssk, yo, k1, [yo, k2tog] twice, yo, k2 (32 sts).
• Row 38: Yo, p2tog, p24, w&t (26 sts).
• Row 39: K15, ssk, yo, k3, [yo, k2tog] twice, yo, k2 (27 sts).
• Rows 40 and 58: Yo, p2tog, p19, w&t (21 sts).
• Row 41: K10, yo, k2tog, k3, [yo, k2tog] twice, yo, k2 (22 sts).
• Row 42: Yo, p2tog, p14, w&t (16 sts).
• Row 43: K4, yo, k2tog, k1, ssk, [yo, k2tog] 3 times, k1 (15 sts).
• Row 44: Yo, p2tog, p9, w&t (11 sts).
• Row 45: K1, yo, k3tog, [yo, k2tog] 3 times, k1 (10 sts).
• Row 46: Yo, p2tog, p5, w&t (7 sts).
• Row 47: [K2tog, yo] twice, k2tog, k1 (6 sts).
• Row 48: Yo, p2tog, p38, k4 (44 sts).
• Row 49: K3, yo, k2tog, k1, yo, k32, [yo, k2tog] twice, yo, k2 (46 sts).
• Row 50: Yo, p2tog, p40, k1, w&t (43 sts).
• Row 51: K34, ssk, yo, k1, [yo, k2tog] twice, yo, k2 (44 sts).
• Row 52: Yo, p2tog, p36, w&t (38 sts).
• Row 53: K27, ssk, yo, k3, [yo, k2tog] twice, yo, k2 (39 sts).
• Row 54: Yo, p2tog, p31, w&t (33 sts).
• Row 55: K22, yo, k2tog, k3, [yo, k2tog] twice, yo, k2 (34 sts).
• Row 56: Yo, p2tog, p26, w&t (28 sts).
• Row 57: K16, yo, k2tog, k1, ssk, [yo, k2tog] 3 times, k1 (27 sts).
• Row 59: K11, yo, k3tog, [yo, k2tog] 3 times, k1 (20 sts).
• Row 60: Yo, p2tog, p12, w&t (14 sts).
• Row 61: K5, k2tog, [yo, k2tog] 3 times, k1 (13 sts).
• Row 62: Yo, p2tog, p7, w&t (9 sts).
• Row 63: K2tog, [yo, k2tog] 3 times, k1 (8 sts).
• Row 64: Yo, p2tog, p39, k4 (45 sts).