Shown with a cast-on count of 20 stitches.  

• Row 43 (RS): [K1, p1] 6 times, k2, p2, k1, yo, PBk, yo, k2 (22 sts).
• Row 44: P6, kfb, k1, [p1, k1] 7 times (23 sts).
• Row 45: [K1, p1] 6 times, k2, p3, k2, yo, PBk, yo, k3 (25 sts).
• Row 46: P8, kfb, k2, [p1, k1] 7 times (26 sts).
• Row 47: [K1, p1] 6 times, k2, p4, k3, yo, PBk, yo, k4 (28 sts).
• Row 48: P10, kfb, k3, [p1, k1] 7 times (29 sts).
• Row 49: [K1, p1] 6 times, k2, p5, ssk, k5, k2tog, k1 (27 sts).
• Row 50: P8, kfb, p1, k3, [p1, k1] 7 times (28 sts).
• Row 51: [K1, p1] 6 times, k2, p3, k1, p2, ssk, k3, k2tog, k1 (26 sts).
• Row 52: P6, kfb, k1, p1, k3, [p1, k1] 7 times (27 sts).
• Row 53: [K1, p1] 6 times, k2, p3, k1, p3, ssk, k1, k2tog, k1 (25 sts).
• Row 54: P4, kfb, k2, p1, k3, [p1, k1] 7 times (26 sts).
• Row 55: [K1, p1] 6 times, k2, p3, k1, p4, sl1-k2tog-psso, k1 (24 sts).
• Row 56: P2tog, BO 3 sts, p1, k3, [p1, k1] 7 times (20 sts).