Shown with a cast-on count of 20 stitches.  

• Row 57 (RS): [K1, p1] 6 times, k2, p2, k1, yo, PBk, yo, k2 (22 sts).
• Row 58: P6, kfb, k1, [p1, k1] 7 times (23 sts).
• Row 59: [K1, p1] 6 times, k2, p3, k2, yo, PBk, yo, k3 (25 sts).
• Row 60: P8, kfb, k2, [p1, k1] 7 times (26 sts).
• Row 61: [K1, p1] 5 times, k1, k2tog, k1, p4, k3, yo, PBk, yo, k4 (27 sts).
• Row 62: P10, kfb, k3, p1, [p1, k1] 6 times (28 sts).
• Row 63: [K1, p1] 6 times, k1, p5, ssk, k5, k2tog, k1 (26 sts).
• Row 64: P8, kfb, p1, k3, p1, [p1, k1] 6 times (27 sts).
• Row 65: [K1, p1] 5 times, k2tog, k1, p3, k1, p2, ssk, k3, k2tog, k1 (24 sts).
• Row 66: P6, kfb, k1, p1, k3, [p1, k1] 6 times (25 sts).
• Row 67: [K1, p1] 5 times, k2, p3, k1, p3, ssk, k1, k2tog, k1 (23 sts).
• Row 68: P4, kfb, k2, p1, k3, [p1, k1] 6 times (24 sts).
• Row 69: [K1, p1] 4 times, k1, k2tog, k1, p3, k1, p4, sl1-k2tog-psso, k1 (21 sts).
• Row 70: P2tog, BO 3 sts, p1, k3, p1, [p1, k1] 5 times (17 sts).