Shown with a cast-on count of 17 stitches.  

• Rounds 1-2 and 5: [K1, p1] 8 times, k1.
• Rounds 3-4: [P1, k1] 8 times, p1.
• Round 6: [K1, p1] 3 times, ssk, p1, k2tog, [p1, k1] 3 times (15 sts).
• Rounds 7-8 and 11: [P1, k1] 7 times, p1.
• Rounds 9-10: [K1, p1] 7 times, k1.
• Round 12: [P1, k1] twice, p1, ssk, p1, k2tog, p1, [k1, p1] twice (13 sts).
• Rounds 13-14 and 17: [K1, p1] 6 times, k1.
• Rounds 15-16: [P1, k1] 6 times, p1.
• Round 18: [K1, p1] twice, ssk, p1, k2tog, [p1, k1] twice (11 sts).