Shown with a cast-on count of 72 stitches.  

• Round 13: [P2, k1, p2, k2, p3, p3tog, p3, k2] 4 times (64 sts).
• Round 14: [P2, k1, p2, k2, p7, k2] 4 times.
• Round 15: [P2, k1, p2, k2, p2, p3tog, p2, k2] 4 times (56 sts).
• Round 16: [P2, k1, p2, k2, p5, k2] 4 times.
• Round 17: [P2, k1, p2, k2, p1, p3tog, p1, k2] 4 times (48 sts).
• Round 18: [P2, k1, p2, k2, p3, k2] 4 times.
• Round 19: [P2, k1, p2, k2, p3tog, k2] 4 times (40 sts).
• Round 20: [P2, k1, p2, k2, p1, k2] 4 times.
• Round 21: [P2, k1, p2, k1, sl2-k1-p2sso, k1] 4 times (32 sts).
• Round 22: [P2, k1, p2, k3] 4 times.
• Round 23: [P2, k1, p2, sl2-k1-p2sso] 4 times (24 sts).
• Round 24: [P2tog, k1] 8 times (16 sts).
• Round 25: [K2tog] 8 times (8 sts).
• Round 26: [K2tog] 4 times (4 sts).