Shown with a cast-on count of 18 stitches.  

• Round 1: K1, [yo, ssk] 3 times, k4, [k2tog, yo] 3 times, k1.
• Rounds 2, 4, 6, 8, 10, 12, 14, 16, 18, and 20: Knit.
• Round 3: [K1, yo, ssk] 3 times, [k2tog, yo, k1] 3 times.
• Round 5: Yo, ssk, k1, yo, k2tog, k2, yo, ssk, k2tog, yo, k2, ssk, yo, k1, k2tog, yo.
• Round 7: K1, ssk, yo, k4, yo, ssk, k2tog, yo, k4, yo, k2tog, k1.
• Round 9: Yo, ssk, yo, k2tog, yo, ssk, yo, ssk, k2, k2tog, yo, k2tog, yo, ssk, yo, k2tog, yo.
• Round 11: K1, yo, ssk, yo, k2tog, k1, yo, k2tog, k2, ssk, yo, k1, ssk, yo, k2tog, yo, k1.
• Round 13: K2, yo, ssk, k1, yo, ssk, yo, k2tog, ssk, yo, k2tog, yo, k1, k2tog, yo, k2.
• Round 15: K3, yo, ssk, yo, k2tog, yo, ssk, k2tog, yo, ssk, yo, k2tog, yo, k3.
• Round 17: K1, yo, ssk, k1, yo, k2tog, yo, k2tog, k2, ssk, yo, ssk, yo, k1, k2tog, yo, k1.
• Round 19: Yo, ssk, yo, k2tog, k2, yo, k2tog, k2, ssk, yo, k2, ssk, yo, k2tog, yo.