Shown with a cast-on count of 30 stitches.  

• Round 1: *K1, yo, ssk, k2, yo, ssk, k1, k2tog, yo, k2, k2tog, yo, k1, repeat from *.
• Rounds 2, 4, 6, 8, 10, 12, 14, 16, and 18: Knit.
• Round 3: *K2, yo, ssk, k2, yo, sl1-k2tog-psso, yo, k2, k2tog, yo, k2, repeat from *.
• Round 5: *K3, yo, ssk, k1, k2tog, yo, k2, k2tog, yo, k3, repeat from *.
• Round 7: *K4, yo, sl1-k2tog-psso, yo, k2, k2tog, yo, k4, repeat from *.
• Round 9: *K4, k2tog, yo, k2, k2tog, yo, k5, repeat from *.
• Round 11: *K3, k2tog, yo, k2, k2tog, yo, k1, yo, ssk, k3, repeat from *.
• Round 13: *[K2, k2tog, yo] twice, k3, yo, ssk, k2, repeat from *.
• Round 15: *K1, k2tog, yo, k2, k2tog, yo, k1, yo, ssk, k2, yo, ssk, k1, repeat from *.
• Round 17: *K2tog, yo, k2, k2tog, yo, k3, yo, ssk, k2, yo, ssk, repeat from *.