Shown with a cast-on count of 20 stitches.  

• Round 1: *P1, k4, k2tog, k3, yo, repeat from *.
• Rounds 2, 4, 6, and 8: *P5, k5, repeat from *.
• Round 3: *P1, k4, k2tog, k2, yo, k1, repeat from *.
• Round 5: *P1, k4, k2tog, k1, yo, k2, repeat from *.
• Round 7: *P1, k4, k2tog, yo, k3, repeat from *.
• Round 9: *P1, yo, k3, ssk, k4, repeat from *.
• Rounds 10, 12, 14, and 16: *P1, k5, p4, repeat from *.
• Round 11: *P1, k1, yo, k2, ssk, k4, repeat from *.
• Round 13: *P1, k2, yo, k1, ssk, k4, repeat from *.
• Round 15: *P1, k3, yo, ssk, k4, repeat from *.