Shown with a cast-on count of 90 stitches.  

• Row 51 (RS): K3, [yo, k1, yo, k2, yo, k23, k2tog] 3 times, yo, k3 (97 sts).
• Row 52: K2, k2tog, [p2tog, p28] 3 times, k3 (93 sts).
• Row 53: K3, [yo, k1, yo, k2, yo, k24, k2tog] 3 times, yo, k3 (100 sts).
• Row 54: K2, k2tog, [p2tog, p29] 3 times, k3 (96 sts).
• Row 55: K3, [yo, k1, yo, k2, yo, k2, yo, k23, k2tog] 3 times, yo, k3 (106 sts).
• Row 56: K2, k2tog, [p2tog, p31] 3 times, k3 (102 sts).
• Row 57: K3, [yo, k1, yo, k2, yo, k5, yo, k22, k2tog] 3 times, yo, k3 (112 sts).
• Row 58: K2, k2tog, [p2tog, p33] 3 times, k3 (108 sts).
• Row 59: K3, [yo, k1, yo, k2, yo, k8, yo, k21, k2tog] 3 times, yo, k3 (118 sts).
• Row 60: K2, k2tog, [p2tog, p35] 3 times, k3 (114 sts).
• Row 61: K3, [yo, k1, yo, k2, yo, k11, yo, k20, k2tog] 3 times, yo, k3 (124 sts).
• Row 62: K2, k2tog, [p2tog, p37] 3 times, k3 (120 sts).
• Row 63: K3, [yo, k1, yo, k2, yo, k14, yo, k19, k2tog] 3 times, yo, k3 (130 sts).
• Row 64: K3, [p2tog, p39] 3 times, p1, k3 (127 sts).
• Row 65: K3, [yo, k1, yo, ssk, k15, k2tog] 6 times, yo, k1, yo, k3 (129 sts).
• Row 67: K3, [yo, k1, yo, k1, yo, k1, yo, ssk, k13, k2tog] 6 times, yo, k1, yo, k1, yo, k1, yo, k3 (145 sts).
• Row 69: K3, [yo, k1, yo, k1, yo, k1, yo, k1, yo, k1, yo, k1, yo, k1, yo, ssk, k11, k2tog] 6 times, yo, k1, yo, k1, yo, k1, yo, k1, yo, k1, yo, k1, yo, k1, yo, k3 (189 sts).
• Row 71: K3, [yo, k2tog, k1, yo, k1, yo, k1, ssk, yo, k1, yo, k2tog, k1, yo, k1, yo, k1, ssk, yo, ssk, k9, k2tog] 6 times, yo, k2tog, k1, yo, k1, yo, k1, ssk, yo, k1, yo, k2tog, k1, yo, k1, yo, k1, ssk, yo, k3 (205 sts).