Shown with a cast-on count of 21 stitches.  

• Round 1: Yo, ssk, k3, ssk, yo, k5, [yo, ssk, k1] 3 times.
• Rounds 2, 4, 6, 8, 10, and 12: K21.
• Round 3: K1, k2tog, yo, [k1, yo, ssk] twice, [k1, k2tog, yo] 4 times.
• Round 5: K2tog, yo, k3, yo, ssk, k1, yo, sl1-k2tog-psso, yo, [k1, k2tog, yo] 3 times, k1.
• Round 7: Yo, k5, yo, ssk, k3, [k2tog, yo, k1] 3 times, k2tog.
• Round 9: K1, yo, ssk, k1, [k2tog, yo, k1] twice, [yo, ssk, k1] 3 times, yo, ssk.